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Finding the Fourth Proportional to 87,297.84, 120,481.31 and 49,057.47

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Solution

The fourth proportional to 87,297.84, 120,481.31 and 49,057.47 is: 67,705.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,297.84 : 120,481.31 = 49,057.47 : x
  2. Step 2: Convert to fraction form
    87,297.84/120,481.31 = 49,057.47/x
  3. Step 3: Cross multiply
    87,297.84x = 120,481.31 × 49,057.47
  4. Step 4: Simplify right side
    87,297.84x = 5,910,508,005.60
  5. Step 5: Solve for x
    x = 5,910,508,005.60/87,297.84
  6. Step 6: Final answer
    x = 67,705.09

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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.