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Finding the Fourth Proportional to 87,648.78, 131,531.40 and 32,244.78

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Solution

The fourth proportional to 87,648.78, 131,531.40 and 32,244.78 is: 48,388.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,648.78 : 131,531.40 = 32,244.78 : x
  2. Step 2: Convert to fraction form
    87,648.78/131,531.40 = 32,244.78/x
  3. Step 3: Cross multiply
    87,648.78x = 131,531.40 × 32,244.78
  4. Step 4: Simplify right side
    87,648.78x = 4,241,201,056.09
  5. Step 5: Solve for x
    x = 4,241,201,056.09/87,648.78
  6. Step 6: Final answer
    x = 48,388.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.