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Finding the Fourth Proportional to 70,091.96, 96,723.52 and 39,874.43

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Solution

The fourth proportional to 70,091.96, 96,723.52 and 39,874.43 is: 55,024.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,091.96 : 96,723.52 = 39,874.43 : x
  2. Step 2: Convert to fraction form
    70,091.96/96,723.52 = 39,874.43/x
  3. Step 3: Cross multiply
    70,091.96x = 96,723.52 × 39,874.43
  4. Step 4: Simplify right side
    70,091.96x = 3,856,795,227.59
  5. Step 5: Solve for x
    x = 3,856,795,227.59/70,091.96
  6. Step 6: Final answer
    x = 55,024.79

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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.