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Finding the Fourth Proportional to 71,371.92, 98,447.58 and 45,869.61

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Solution

The fourth proportional to 71,371.92, 98,447.58 and 45,869.61 is: 63,270.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,371.92 : 98,447.58 = 45,869.61 : x
  2. Step 2: Convert to fraction form
    71,371.92/98,447.58 = 45,869.61/x
  3. Step 3: Cross multiply
    71,371.92x = 98,447.58 × 45,869.61
  4. Step 4: Simplify right side
    71,371.92x = 4,515,752,100.04
  5. Step 5: Solve for x
    x = 4,515,752,100.04/71,371.92
  6. Step 6: Final answer
    x = 63,270.71

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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.