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Finding the Fourth Proportional to 68,469.20, 102,732.60 and 37,326.80

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Solution

The fourth proportional to 68,469.20, 102,732.60 and 37,326.80 is: 56,005.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,469.20 : 102,732.60 = 37,326.80 : x
  2. Step 2: Convert to fraction form
    68,469.20/102,732.60 = 37,326.80/x
  3. Step 3: Cross multiply
    68,469.20x = 102,732.60 × 37,326.80
  4. Step 4: Simplify right side
    68,469.20x = 3,834,679,213.68
  5. Step 5: Solve for x
    x = 3,834,679,213.68/68,469.20
  6. Step 6: Final answer
    x = 56,005.90

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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.