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Finding the Fourth Proportional to 72,949.77, 100,753.68 and 49,034.91

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Solution

The fourth proportional to 72,949.77, 100,753.68 and 49,034.91 is: 67,723.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,949.77 : 100,753.68 = 49,034.91 : x
  2. Step 2: Convert to fraction form
    72,949.77/100,753.68 = 49,034.91/x
  3. Step 3: Cross multiply
    72,949.77x = 100,753.68 × 49,034.91
  4. Step 4: Simplify right side
    72,949.77x = 4,940,447,630.97
  5. Step 5: Solve for x
    x = 4,940,447,630.97/72,949.77
  6. Step 6: Final answer
    x = 67,723.96

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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.