Question

найдите значение x из пропорций​

Answer 1

$1\frac4{27}:3\frac19=10\frac13:x\\\\\frac{31}{27}:\frac{28}9=\frac{31}3:x\\\\\frac{31}{27}\cdot\frac9{28}=\frac{31}3\cdot\frac1x\\\\\frac{31}3\cdot\frac1{28}=\frac{31}3\cdot\frac1x\\\\\frac1x=\frac1{28}\\\\x=28$