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Finding the Fourth Proportional to 73,915.20, 110,872.80 and 36,493.20

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Solution

The fourth proportional to 73,915.20, 110,872.80 and 36,493.20 is: 54,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,915.20 : 110,872.80 = 36,493.20 : x
  2. Step 2: Convert to fraction form
    73,915.20/110,872.80 = 36,493.20/x
  3. Step 3: Cross multiply
    73,915.20x = 110,872.80 × 36,493.20
  4. Step 4: Simplify right side
    73,915.20x = 4,046,103,264.96
  5. Step 5: Solve for x
    x = 4,046,103,264.96/73,915.20
  6. Step 6: Final answer
    x = 54,739.80

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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.