What is the fourth proportional to 24, 120 and 22?
110
If \(x\) is the fourth proportional to 24, 120, 22, then \(24:120::22:x\), i.e.
\[\frac{24}{120}=\frac{22}{x}\]
Cross-multiplying:
\[24x=120\times 22=2640\implies x=110\]
Therefore the fourth proportional is 110.
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