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Finding the Fourth Proportional to 71,308.74, 98,402.31 and 39,037.17

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Solution

The fourth proportional to 71,308.74, 98,402.31 and 39,037.17 is: 53,869.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,308.74 : 98,402.31 = 39,037.17 : x
  2. Step 2: Convert to fraction form
    71,308.74/98,402.31 = 39,037.17/x
  3. Step 3: Cross multiply
    71,308.74x = 98,402.31 × 39,037.17
  4. Step 4: Simplify right side
    71,308.74x = 3,841,347,949.87
  5. Step 5: Solve for x
    x = 3,841,347,949.87/71,308.74
  6. Step 6: Final answer
    x = 53,869.25

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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.