Answer
$z = 0.75$
Work Step by Step
$\frac{\frac{7}{8}}{z} = \frac{\frac{2}{3}}{\frac{4}{7}}$
$\frac{7}{8} \times \frac{4}{7} = \frac{2}{3} \times z$
$\frac{28}{56} = \frac{2z}{3}$
$\frac{84}{56} = 2z$
$84 = 112z$
$z = 0.75$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 6 - Section 6.2 - Proportions - Practice - Page 424: 7
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