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Finding the Fourth Proportional to 71,372.16, 98,503.92 and 43,081.92

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Solution

The fourth proportional to 71,372.16, 98,503.92 and 43,081.92 is: 59,459.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,372.16 : 98,503.92 = 43,081.92 : x
  2. Step 2: Convert to fraction form
    71,372.16/98,503.92 = 43,081.92/x
  3. Step 3: Cross multiply
    71,372.16x = 98,503.92 × 43,081.92
  4. Step 4: Simplify right side
    71,372.16x = 4,243,738,001.13
  5. Step 5: Solve for x
    x = 4,243,738,001.13/71,372.16
  6. Step 6: Final answer
    x = 59,459.29

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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.