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Let log2x+log4y+log4z=2; log9x+log3y+lo...

Let `log_2x+log_4y+log_4z=2;` `log_9x+log_3y+log_9z=2;` `log_(16)x+log_(16)y+log_4z=2.` Find the value of `(y z)/x.`

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