A scale model of a human heart is 190 Inches long. The scale is 34 to 1. How many Inches long is the actual heart? Round your answer to the nearest whole number.

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.