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Finding the Fourth Proportional to 91,866.70, 137,800.68 and 25,310.44

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Solution

The fourth proportional to 91,866.70, 137,800.68 and 25,310.44 is: 37,965.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,866.70 : 137,800.68 = 25,310.44 : x
  2. Step 2: Convert to fraction form
    91,866.70/137,800.68 = 25,310.44/x
  3. Step 3: Cross multiply
    91,866.70x = 137,800.68 × 25,310.44
  4. Step 4: Simplify right side
    91,866.70x = 3,487,795,843.10
  5. Step 5: Solve for x
    x = 3,487,795,843.10/91,866.70
  6. Step 6: Final answer
    x = 37,965.83

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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.