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Finding the Fourth Proportional to 168,503,839.80, 252,755,759.70 and 77,804,575.80

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Solution

The fourth proportional to 168,503,839.80, 252,755,759.70 and 77,804,575.80 is: 116,706,863.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,503,839.80 : 252,755,759.70 = 77,804,575.80 : x
  2. Step 2: Convert to fraction form
    168,503,839.80/252,755,759.70 = 77,804,575.80/x
  3. Step 3: Cross multiply
    168,503,839.80x = 252,755,759.70 × 77,804,575.80
  4. Step 4: Simplify right side
    168,503,839.80x = 19,665,554,664,465,232
  5. Step 5: Solve for x
    x = 19,665,554,664,465,232/168,503,839.80
  6. Step 6: Final answer
    x = 116,706,863.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.