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Finding the Fourth Proportional to 72,949.54, 100,753.42 and 49,034.70

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Solution

The fourth proportional to 72,949.54, 100,753.42 and 49,034.70 is: 67,723.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,949.54 : 100,753.42 = 49,034.70 : x
  2. Step 2: Convert to fraction form
    72,949.54/100,753.42 = 49,034.70/x
  3. Step 3: Cross multiply
    72,949.54x = 100,753.42 × 49,034.70
  4. Step 4: Simplify right side
    72,949.54x = 4,940,413,723.67
  5. Step 5: Solve for x
    x = 4,940,413,723.67/72,949.54
  6. Step 6: Final answer
    x = 67,723.71

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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.