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Finding the Fourth Proportional to 74,362.62, 102,620.79 and 42,532.86

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Solution

The fourth proportional to 74,362.62, 102,620.79 and 42,532.86 is: 58,695.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,362.62 : 102,620.79 = 42,532.86 : x
  2. Step 2: Convert to fraction form
    74,362.62/102,620.79 = 42,532.86/x
  3. Step 3: Cross multiply
    74,362.62x = 102,620.79 × 42,532.86
  4. Step 4: Simplify right side
    74,362.62x = 4,364,755,694.16
  5. Step 5: Solve for x
    x = 4,364,755,694.16/74,362.62
  6. Step 6: Final answer
    x = 58,695.56

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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.