## Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole

# Chapter 5 - Section 5.1 - Ratios, Rates, and Proportions - Exercises: 38

#### Answer

To do the proof, we simplify the expression, first using cross multiplication. $\frac{a}{b} = \frac{c}{d} \\ ad = bc \\ \frac{a}{c} = \frac{b}{d}$

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