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Finding the Fourth Proportional to 71,338.98, 98,375.86 and 52,221.86

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Solution

The fourth proportional to 71,338.98, 98,375.86 and 52,221.86 is: 72,013.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,338.98 : 98,375.86 = 52,221.86 : x
  2. Step 2: Convert to fraction form
    71,338.98/98,375.86 = 52,221.86/x
  3. Step 3: Cross multiply
    71,338.98x = 98,375.86 × 52,221.86
  4. Step 4: Simplify right side
    71,338.98x = 5,137,370,388.30
  5. Step 5: Solve for x
    x = 5,137,370,388.30/71,338.98
  6. Step 6: Final answer
    x = 72,013.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.