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Finding the Fourth Proportional to 67,845.80, 101,817.30 and 38,232.20

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Solution

The fourth proportional to 67,845.80, 101,817.30 and 38,232.20 is: 57,375.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,845.80 : 101,817.30 = 38,232.20 : x
  2. Step 2: Convert to fraction form
    67,845.80/101,817.30 = 38,232.20/x
  3. Step 3: Cross multiply
    67,845.80x = 101,817.30 × 38,232.20
  4. Step 4: Simplify right side
    67,845.80x = 3,892,699,377.06
  5. Step 5: Solve for x
    x = 3,892,699,377.06/67,845.80
  6. Step 6: Final answer
    x = 57,375.69

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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.