Answer
$x = 1.56$
Work Step by Step
$\frac{2.6}{x} = \frac{13}{7.8}$
$13x = 2.6\times7.8$
$\frac{13x}{13} = \frac{20.28}{13}$
$x = 1.56$
Basic College Mathematics (10th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0134467795
ISBN 13:
978-0-13446-779-5
Chapter 5 - Ratio and Proportion - Summary Exercises - Ratio, Rates and Proportions - Page 359: 21
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