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Finding the Fourth Proportional to 61,229.80, 91,844.70 and 40,234.60

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Solution

The fourth proportional to 61,229.80, 91,844.70 and 40,234.60 is: 60,351.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,229.80 : 91,844.70 = 40,234.60 : x
  2. Step 2: Convert to fraction form
    61,229.80/91,844.70 = 40,234.60/x
  3. Step 3: Cross multiply
    61,229.80x = 91,844.70 × 40,234.60
  4. Step 4: Simplify right side
    61,229.80x = 3,695,334,766.62
  5. Step 5: Solve for x
    x = 3,695,334,766.62/61,229.80
  6. Step 6: Final answer
    x = 60,351.90

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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.