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Finding the Fourth Proportional to 71,260.21, 98,469.22 and 67,801.56

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Solution

The fourth proportional to 71,260.21, 98,469.22 and 67,801.56 is: 93,689.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,260.21 : 98,469.22 = 67,801.56 : x
  2. Step 2: Convert to fraction form
    71,260.21/98,469.22 = 67,801.56/x
  3. Step 3: Cross multiply
    71,260.21x = 98,469.22 × 67,801.56
  4. Step 4: Simplify right side
    71,260.21x = 6,676,366,316.35
  5. Step 5: Solve for x
    x = 6,676,366,316.35/71,260.21
  6. Step 6: Final answer
    x = 93,689.97

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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.