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Finding the Fourth Proportional to 242,691.90, 364,037.85 and 74,211.90

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Solution

The fourth proportional to 242,691.90, 364,037.85 and 74,211.90 is: 111,317.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,691.90 : 364,037.85 = 74,211.90 : x
  2. Step 2: Convert to fraction form
    242,691.90/364,037.85 = 74,211.90/x
  3. Step 3: Cross multiply
    242,691.90x = 364,037.85 × 74,211.90
  4. Step 4: Simplify right side
    242,691.90x = 27,015,940,520.42
  5. Step 5: Solve for x
    x = 27,015,940,520.42/242,691.90
  6. Step 6: Final answer
    x = 111,317.85

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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.