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Finding the Fourth Proportional to 74,110.68, 111,137.67 and 36,657.90

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Solution

The fourth proportional to 74,110.68, 111,137.67 and 36,657.90 is: 54,972.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,110.68 : 111,137.67 = 36,657.90 : x
  2. Step 2: Convert to fraction form
    74,110.68/111,137.67 = 36,657.90/x
  3. Step 3: Cross multiply
    74,110.68x = 111,137.67 × 36,657.90
  4. Step 4: Simplify right side
    74,110.68x = 4,074,073,593.09
  5. Step 5: Solve for x
    x = 4,074,073,593.09/74,110.68
  6. Step 6: Final answer
    x = 54,972.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.