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Finding the Fourth Proportional to 61,363.68, 84,619.52 and 57,791.92

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Solution

The fourth proportional to 61,363.68, 84,619.52 and 57,791.92 is: 79,694.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,363.68 : 84,619.52 = 57,791.92 : x
  2. Step 2: Convert to fraction form
    61,363.68/84,619.52 = 57,791.92/x
  3. Step 3: Cross multiply
    61,363.68x = 84,619.52 × 57,791.92
  4. Step 4: Simplify right side
    61,363.68x = 4,890,324,530.28
  5. Step 5: Solve for x
    x = 4,890,324,530.28/61,363.68
  6. Step 6: Final answer
    x = 79,694.12

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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.