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Finding the Fourth Proportional to 65,257.40, 97,691.70 and 38,948.60

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Solution

The fourth proportional to 65,257.40, 97,691.70 and 38,948.60 is: 58,306.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,257.40 : 97,691.70 = 38,948.60 : x
  2. Step 2: Convert to fraction form
    65,257.40/97,691.70 = 38,948.60/x
  3. Step 3: Cross multiply
    65,257.40x = 97,691.70 × 38,948.60
  4. Step 4: Simplify right side
    65,257.40x = 3,804,954,946.62
  5. Step 5: Solve for x
    x = 3,804,954,946.62/65,257.40
  6. Step 6: Final answer
    x = 58,306.87

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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.