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Finding the Fourth Proportional to 87,593, 120,878.48 and 49,867.25

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Solution

The fourth proportional to 87,593, 120,878.48 and 49,867.25 is: 68,816.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,593 : 120,878.48 = 49,867.25 : x
  2. Step 2: Convert to fraction form
    87,593/120,878.48 = 49,867.25/x
  3. Step 3: Cross multiply
    87,593x = 120,878.48 × 49,867.25
  4. Step 4: Simplify right side
    87,593x = 6,027,877,381.78
  5. Step 5: Solve for x
    x = 6,027,877,381.78/87,593
  6. Step 6: Final answer
    x = 68,816.88

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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.