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Βιβλία Βιβλία 91 - 100 από 107 για In any proportion, the product of the means equals the product of the extremes..
" In any proportion, the product of the means equals the product of the extremes. "
The New Normal Written Arithmetic: Designed for Common Schools, Normal ... - Σελίδα 293
των Edward Brooks - 1877 - 421 σελίδες
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Geometry - Plane, Solid and Analytic Problem Solver

Research & Education Association Editors, Ernest Woodward - 2012 - 1080 σελίδες
...Let x - EF, then x + 6" x x+6" 8" 24" DC length of base AB = EG. By substitution, 8_ 24 ' Since, in a proportion, the product of the means equals the product of the extremes, 24x •= 8x + 48" 16x - 48" x - 3" . Therefore, the altitude of ADEC to DC, EF, measures 3 in. b) The...
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Principles and Applications of Mathematics for Communications-electronics

1992
...There are three rules of proportion that are used in determining an unknown quantity. 12 a. In any proportion, the product of the means equals the product of the extremes. Example 1: 3:4 :: 9:12. 3 X 12 = 36 (product of extremes) 4 x 9 = 36 (product of means) 3 9 Example...

The Words of Mathematics: An Etymological Dictionary of Mathematical Terms ...

Steven Schwartzman - 1994 - 261 σελίδες
...tripod. In older treatments of elementary algebra the Rule of Three made use of the fact that in a proportion the product of the means equals the product of the extremes; in other words, given any three of the members of the proportion, the fourth member can always be found....
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On the Shoulders of Merchants: Exchange and the Mathematical Conception of ...

Richard W. Hadden - 1994 - 191 σελίδες
...most of the problems the student would likely encounter in his life. It is based on the principle that the product of the means equals the product of the extremes in a simple proportion of the form a/b = c/d, so that given three terms it is possible to find the fourth...
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Schaum's Outline of Basic Mathematics with Applications to Science and ...

Haym Kruglak, John Moore, Ramon Mata-Toledo - 1998 - 341 σελίδες
...equation for P: — = • 50 P -15 21 (P — 15) = 50 • 16 since the given equation may be regarded as a proportion, the product of the means equals the product of the extremes 21 • P - 2 1 • 15 = 50- 16 remove parentheses 21 P -3 15 = 800 simplify 21P=800 + 315 = 1115 transpose...
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Dosage Calculations Made Incredibly Easy!

Springhouse - 2002 - 309 σελίδες
...end numbers are called the extremes, and the inner or middle numbers are called the means. In such a proportion, the product of the means equals the product of the extremes. In this case, 1 X 20 = 4 X 5 This principle lets you solve for any of four unknown parts in a proportion....
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Vedic Mathematics for Schools, Βιβλίο 2

James T. Glover - 2001 - 282 σελίδες
...ratio equation cannot be solved By Inspection then we can use the general method. This uses the sutra. The product of the means equals the product of the extremes. In a proportion, by the word means is meant the middle two numbers and by the word extremes is meant the...
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Roadmap to the Regents: Mathematics B

David S. Kahn, Princeton Review - 2003 - 303 σελίδες
...angles are congruent. 4. AA = AA 5. Corresponding sides of similar triangles are in proportion. 6. In a proportion, the product of the means equals the product of the extremes. [5] AA£D and ACE5 are correctly proved to be similar, and the appropriate proportion is written with...
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Math and Meds for Nurses, Τόμος 1

Dolores F. Saxton, Norma Ercolano-O'Neill, Colleen Glavinspiehs - 2005 - 408 σελίδες
...proportion (equation), it is important to recognize that certain principles influence this task. ln a true proportion, the product of the means equals the product of the extremes (or the product of the extremes equals the product of the means). When two ratios are set up as equal,...
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Sat Test Excellerator Mathematics

Instructivision, Incorporated - 2004
...addition or multiplication. 2. The average is the sum of the terms divided by the number of terms. 3. In a proportion, the product of the means equals the product of the extremes. 4. In following the order of operations do all work within the parentheses and then find the powers...
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