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The compound ratio of the ratios ab : c^...

The compound ratio of the ratios `ab : c^(2), bc : a^(2) " and " ca : b^(2) " is " 1 : 1`.

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The compound ratio of the ratios ` ab : c^(2), bc : a^(2) " and " ca : b^(2)`
` = (ab xx bc xx ca) : (c^2) xx a^(2) xx b^(2))`
` = a^(2)b^(2)c^(2) : a^(2)b^(2)c^(2)`
` = 1 : 1`.
Hence the statement is true.
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