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Finding the Fourth Proportional to 67,211.78, 100,755.36 and 29,751.88

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Solution

The fourth proportional to 67,211.78, 100,755.36 and 29,751.88 is: 44,600.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,211.78 : 100,755.36 = 29,751.88 : x
  2. Step 2: Convert to fraction form
    67,211.78/100,755.36 = 29,751.88/x
  3. Step 3: Cross multiply
    67,211.78x = 100,755.36 × 29,751.88
  4. Step 4: Simplify right side
    67,211.78x = 2,997,661,380.08
  5. Step 5: Solve for x
    x = 2,997,661,380.08/67,211.78
  6. Step 6: Final answer
    x = 44,600.24

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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.