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Then multiply the second and third terms together, and divide the product by the first term: the quotient will be the fourth term, or answer.
Practical Arithmetic: In Four Books ... Extracted from the Large and Entire ... - Σελίδα 132
επεξεργασία από - 1813 - 348 σελίδες
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## A Treatise on Plane and Spherical Trigonometry: With Their Most Useful ...

John Bonnycastle - 1806 - 419 σελίδες
...others were taken. In the second method, having stated the proportion, according to the proper rule, multiply the second and third terms together, and divide the product by the first, and the quotient will be the fourth term required, for the natural numbers. Or, in working by logarithms,...

## The American Tutor's Guide: Being a Compendium of Arithmetic. In Six Parts ...

James Thompson - 1808 - 172 σελίδες
...term ; and that which is of the same name or quality with the answer required, the second term. Then multiply the second and third terms together, and divide the product by the first. The quotient will be the fourth term or answer, in the same name or denomination as the second term was left in....

## A Treatise of Plane and Spherical Trigonometry: In Theory and Practice ...

Francis Nichols - 1811 - 128 σελίδες
...analogy be formed according to the proper rule above delivered; then, if the natural numbers be used, multiply the second and third terms together, and divide the product by the first; the quotient will be the fourth term required. If logarithms be used, add the logarithms of the second and third...

## The Teachers Assistant. Or, A System of Practical Arithmetic: Wherein the ...

1811 - 198 σελίδες
...DIRECT PROPORTION. RULE. « Prepare the given terms, if necessary, and state them as in whole numbers ; multiply the second and third terms together, and divide the product by the first. Or, / . Invert the dividing term, and multiply the three tejgms together, as in Multiplication. * EXAMPLES....

## The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - 1811 - 508 σελίδες
...as much greater, or less than the third, as the second term is greater, or less than the first, then multiply the second and third terms together, and divide the product by the first term, and the quotient will be the answer ; — in the same denomination with the third term. EXAMPLES....

## The American Arithmetic: Adapted to the Currency of the United States ...

Oliver Welch - 1812 - 231 σελίδες
...denomination ; and reduce the middle number, or term, into the lowest denomination mentioned : then multiply the second and third terms together, and divide the product by the first ; the quotient will be the answer, or fourth term sought ; and always will be of the same depomiiuition as that of...

## An Easy Introduction to the Mathematics: In which the Theory and ..., Τόμος 1

Charles Butler - 1814
...in either. Likewise the second term must be reduced to the lowest denomination mentioned in it. IV. Multiply the second and third terms together, and divide the product by the first ; the quotient will be the fourth term, or answer, in the same denomination into which the second term was reduced....

## The village school improved; or, The new system of education practically ...

John Poole - 1815
...namely, shillings. Q. Having attended to the three given terms, what do you proceed to do next? — A. I multiply the second and third terms together, and divide the product by the first. Q. Is not this last mentioned operation the main rule in the Rule of Three Direct?— A. Yes. Q. In...

## A Complete System of Theoretical and Mercantile Arithmetic: Comprehending a ...

George G. Carey - 1818 - 574 σελίδες
...means. Hence results the following rule for finding a fourth proportional to three given numbers. BULE. Multiply the second and third terms together, and divide the product by the first, and the quotient is the answer, or fourth proportional. EXAMPLE I. Required a fourth proportional to...

## A Treatise of Practical Arithmetic

Robert Patterson - 1819 - 156 σελίδες
...we have the equation ad = be, and this divided by a, will give d = —. In words — multiply the a second and third terms together, and divide the product by the first, and the quotient will be the fourth, or term required. II. IN ALLIGATION ALTERNATE. Let a, A, = the...