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Finding the Fourth Proportional to 71,250.98, 98,306.46 and 42,173.87

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Solution

The fourth proportional to 71,250.98, 98,306.46 and 42,173.87 is: 58,188.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,250.98 : 98,306.46 = 42,173.87 : x
  2. Step 2: Convert to fraction form
    71,250.98/98,306.46 = 42,173.87/x
  3. Step 3: Cross multiply
    71,250.98x = 98,306.46 × 42,173.87
  4. Step 4: Simplify right side
    71,250.98x = 4,145,963,372.67
  5. Step 5: Solve for x
    x = 4,145,963,372.67/71,250.98
  6. Step 6: Final answer
    x = 58,188.16

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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.