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Finding the Fourth Proportional to 73,901.20, 110,851.80 and 72,734.80

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Solution

The fourth proportional to 73,901.20, 110,851.80 and 72,734.80 is: 109,102.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,901.20 : 110,851.80 = 72,734.80 : x
  2. Step 2: Convert to fraction form
    73,901.20/110,851.80 = 72,734.80/x
  3. Step 3: Cross multiply
    73,901.20x = 110,851.80 × 72,734.80
  4. Step 4: Simplify right side
    73,901.20x = 8,062,783,502.64
  5. Step 5: Solve for x
    x = 8,062,783,502.64/73,901.20
  6. Step 6: Final answer
    x = 109,102.20

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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.