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Finding the Fourth Proportional to 99,234.60, 148,851.90 and 61,909.80

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Solution

The fourth proportional to 99,234.60, 148,851.90 and 61,909.80 is: 92,864.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,234.60 : 148,851.90 = 61,909.80 : x
  2. Step 2: Convert to fraction form
    99,234.60/148,851.90 = 61,909.80/x
  3. Step 3: Cross multiply
    99,234.60x = 148,851.90 × 61,909.80
  4. Step 4: Simplify right side
    99,234.60x = 9,215,391,358.62
  5. Step 5: Solve for x
    x = 9,215,391,358.62/99,234.60
  6. Step 6: Final answer
    x = 92,864.70

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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.