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Finding the Fourth Proportional to 78,161.96, 107,872.98 and 44,171.88

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Solution

The fourth proportional to 78,161.96, 107,872.98 and 44,171.88 is: 60,962.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,161.96 : 107,872.98 = 44,171.88 : x
  2. Step 2: Convert to fraction form
    78,161.96/107,872.98 = 44,171.88/x
  3. Step 3: Cross multiply
    78,161.96x = 107,872.98 × 44,171.88
  4. Step 4: Simplify right side
    78,161.96x = 4,764,952,327.80
  5. Step 5: Solve for x
    x = 4,764,952,327.80/78,161.96
  6. Step 6: Final answer
    x = 60,962.55

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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.