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Finding the Fourth Proportional to 74,789.97, 103,248.24 and 57,755.97

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Solution

The fourth proportional to 74,789.97, 103,248.24 and 57,755.97 is: 79,732.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,789.97 : 103,248.24 = 57,755.97 : x
  2. Step 2: Convert to fraction form
    74,789.97/103,248.24 = 57,755.97/x
  3. Step 3: Cross multiply
    74,789.97x = 103,248.24 × 57,755.97
  4. Step 4: Simplify right side
    74,789.97x = 5,963,202,251.99
  5. Step 5: Solve for x
    x = 5,963,202,251.99/74,789.97
  6. Step 6: Final answer
    x = 79,732.65

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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.