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Finding the Fourth Proportional to 331,712.60, 497,568.90 and 82,394.60

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Solution

The fourth proportional to 331,712.60, 497,568.90 and 82,394.60 is: 123,591.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,712.60 : 497,568.90 = 82,394.60 : x
  2. Step 2: Convert to fraction form
    331,712.60/497,568.90 = 82,394.60/x
  3. Step 3: Cross multiply
    331,712.60x = 497,568.90 × 82,394.60
  4. Step 4: Simplify right side
    331,712.60x = 40,996,990,487.94
  5. Step 5: Solve for x
    x = 40,996,990,487.94/331,712.60
  6. Step 6: Final answer
    x = 123,591.90

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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.