If \(p:q=7:3\) and \(q:r=3:5\), find the ratio \(p:q:r\).
We can see that
\(\begin{aligned} p:q&=7:\color{red}{3} \\\\q:r&={\color{red}{3}}:5. \end{aligned}\)
Thus, the ratio of \(p:q:r\) is \(7:3:5.\)
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