Finding the Fourth Proportional to 139,739,430.87, 192,841,205.15 and 81,036,950.09
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Solution
The fourth proportional to 139,739,430.87, 192,841,205.15 and 81,036,950.09 is: 111,831,449.57
Step by Step Solution
- Step 1: Write the proportion equation
139,739,430.87 : 192,841,205.15 = 81,036,950.09 : x - Step 2: Convert to fraction form
139,739,430.87/192,841,205.15 = 81,036,950.09/x - Step 3: Cross multiply
139,739,430.87x = 192,841,205.15 × 81,036,950.09 - Step 4: Simplify right side
139,739,430.87x = 15,627,263,116,274,386 - Step 5: Solve for x
x = 15,627,263,116,274,386/139,739,430.87 - Step 6: Final answer
x = 111,831,449.57
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.