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Q43: In the equation above

October 15, 2026

2018 Test A Math · Question 43 of 57

$\frac{w}{x}=\frac{y}{z}$

In the equation above, $w,x,y$ , and $z$ are positive numbers. Which of these is equal to $z$ ?

A $x$
B $xy$
C $\frac{w}{xy}$
D $\frac{xy}{w}$

Show the answer

Correct answer: D

Solve the equation for $z$ :

$frac{w}{x}=frac{y}{z}$

$wz=xy$

$z=frac{xy}{w}$

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