$\frac{3}{5}：\frac{3}{4}=？$  

 $\frac{7}{13}：\frac{2}{3}=？$  

 $\frac{5}{7}：\frac{3}{8}=？$  

 $\frac{2}{5}：\frac{7}{9}=？$  

 $\frac{7}{3}：\frac{10}{3}=？$  

 $\frac{9}{4}：\frac{3}{2}=？$  

 $\frac{11}{5}：\frac{7}{3}=？$  

 $\frac{10}{7}：\frac{5}{3}=？$  

 $\frac{13}{7}：\frac{9}{7}=？$