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Finding the Fourth Proportional to 69,557.92, 95,988.24 and 39,748

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Solution

The fourth proportional to 69,557.92, 95,988.24 and 39,748 is: 54,851.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,557.92 : 95,988.24 = 39,748 : x
  2. Step 2: Convert to fraction form
    69,557.92/95,988.24 = 39,748/x
  3. Step 3: Cross multiply
    69,557.92x = 95,988.24 × 39,748
  4. Step 4: Simplify right side
    69,557.92x = 3,815,340,563.52
  5. Step 5: Solve for x
    x = 3,815,340,563.52/69,557.92
  6. Step 6: Final answer
    x = 54,851.27

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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.