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Βιβλία Βιβλία 1 - 10 από 180 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 Progressive Higher Arithmetic: For Schools, Academies, and Mercantile ... - Σελίδα 247
των Horatio Nelson Robinson - 1868 - 456 σελίδες
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Practical Arithmetic, by Induction and Analysis

Joseph Ray - 1857 - 336 σελίδες
...into direct and invent; a dietinction of no utility, and always embarrassing to the learner. ART. 202. Since the product of the means equals the product of the extremes, and the product of two factors divided by either of them, gives the other, Art. 37, Therefore, If the...

Bryant and Stratton's Commercial Arithmetic: In Two Parts. Designed for the ...

Emerson Elbridge White - 1861 - 332 σελίδες
...have 8x6=12x4. But 8 and 6 are the means of the above proportion, and 12 and 4 its extremes. Hence, In every proportion, the product of the means equals the product of the extremes. Therefore, 1. If the product of the two means of a proportion be divided by either extreme, the quotient...

The Normal Written Arithmetic: By Analysis and Synthesis, Designed for ...

Edward Brooks - 1863
...ratios. A Compound Proportion is the comparison of compound ratios. PRINCIPLES OF PROPORTION. PROP. I. — In every proportion the product of the means equals the product of the extremes. DEM. — In the proportion 2 : 6 : : 4 : 12 we have J = T\ ; now if we multiply both these equals by...

A Written Arithmetic, for the Common and Higher Schools; to which is Adapted ...

Mrs. Electra Nobles Lincoln Walton - 1865 - 335 σελίδες
...performance of arithmetical examples by proportion depends upon the following important principle : — In every proportion the product of the means equals the product of the extremes. ILLUSTRATION. Writing the given proportion in a fraco . o . . A . Q tional form, we have j- = •£....

THE CRITTENDEN COMMERCIAL ARITHMETIC AND BUSINESS MANUAL

JOHN GROESBECK, - 1868
...10 to 20. The first and fourth terms are called the extremes; the second and third, the means. 85. In every proportion the product of the means equals the product of the extremes. SIMPLE PROPORTION, OR, RULE OF THREE. 86. A Simple Proportion is expressed by an equality of two ratios,...

The Crittenden Commercial Arithmetic and Business Manual: Designed for the ...

John Groesbeck - 1868 - 348 σελίδες
...10 to 20. The first and fourth terms are called the extremes; the second and third, the means. 85. In every proportion the product of the means equals the product of the extremes. SIMPLE PROPORTION, OR, RULE OF THREE. 86. A Simple Proportion is expressed by an equality of two ratios,...

Practical Arithmetic: By Induction and Analysis

Joseph Ray - 1857 - 320 σελίδες
...direct and in/verte; a distinction of no utility, and always embarrassing to the learner. ART. 202. Since the product of the means equals the product of the extremes, and the product of two factors divided by cither of them, gives the other, Art. 37, Therefore, IfiJie...

The Illustrative Practical Arithmetic by a Natural Method ...

George Augustus Walton, Electa Nobles Lincoln Walton - 1869 - 336 σελίδες
...NOTE TO THE TEACHER. — The principle given in Deduction 1 is sometimes enunciated thus : " In any proportion the product of the means equals the product of the extremes," which is not true when the terms are denominate numbers ; thus in the proportion 4 pk. : 5 pk. = $...

The Crittendon Commercial Arithmetic and Business Manual: Designed for the ...

John Groesbeck - 1871 - 344 σελίδες
...10 to 20. The first and fourth terms are called the extremes; the second and third, the means. 85. In every proportion the product of the means equals the product of the extremes. From this principle, having three terms of a proportion, we are enabled to find the fourth. SIMPLE...

The Illustrative Practical Arithmetic by a Natural Method with Dictation ...

George Augustus Walton - 1871 - 336 σελίδες
...NOTE TO THE TEACHER. — The principle given in Deduction 1 is some, times enunciated thus : " In any proportion the product of the means equals the product of the extremes," which is not true when tire terms are denominate numbers ; thus in the proportion 4 pk. : 5 pk. = $...




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