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Finding the Fourth Proportional to 71,047.66, 98,046.57 and 39,217.90

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Solution

The fourth proportional to 71,047.66, 98,046.57 and 39,217.90 is: 54,121.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,047.66 : 98,046.57 = 39,217.90 : x
  2. Step 2: Convert to fraction form
    71,047.66/98,046.57 = 39,217.90/x
  3. Step 3: Cross multiply
    71,047.66x = 98,046.57 × 39,217.90
  4. Step 4: Simplify right side
    71,047.66x = 3,845,180,577.60
  5. Step 5: Solve for x
    x = 3,845,180,577.60/71,047.66
  6. Step 6: Final answer
    x = 54,121.14

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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.