### Exercise condition:

4
For the perpendicular bisector R, the length of $$PQ =$$ $$6x+13$$, $$PR =$$ $$8x+2$$ and $$OR =$$ $$9x$$ are given.
Find the length of the line segments $$PQ, PR, QO$$ and $$OR$$.

$$PQ =$$ ;
$$PR =$$ ;
$$QO =$$ ;
$$RO =$$ .