Question 23
In $\triangle ABC$, $AB:AC=4:3$ and $M$ is the midpoint of $BC$. $E$ is a point on $AB$ and $F$ is a point on $AC$ such that $AE:AF=2:1$. It is also given that $EF$ and $AM$ intersect at $G$ with $GF=72$ cm and $GE=x$ cm. Find the value of $x$.
