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Finding the Fourth Proportional to 73,915.20, 110,872.80 and 73,259.10

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Solution

The fourth proportional to 73,915.20, 110,872.80 and 73,259.10 is: 109,888.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,915.20 : 110,872.80 = 73,259.10 : x
  2. Step 2: Convert to fraction form
    73,915.20/110,872.80 = 73,259.10/x
  3. Step 3: Cross multiply
    73,915.20x = 110,872.80 × 73,259.10
  4. Step 4: Simplify right side
    73,915.20x = 8,122,441,542.48
  5. Step 5: Solve for x
    x = 8,122,441,542.48/73,915.20
  6. Step 6: Final answer
    x = 109,888.65

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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.