$\frac {5} {8}\times $()=1

$\frac {5} {9}\times $()=1

()$\times \frac {5} {3}$=1

()$\times \frac {15} {14}$=1

$\frac {7} {12}\times $()=1

()$\times \frac {3} {14}$=1

$\frac {4} {11}\times $()=1

$\frac {1} {4}\times $=1

$\frac {6} {11}\times $()=1

$\frac {19} {50}\times $()=1