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Finding the Fourth Proportional to 73,903.20, 110,854.80 and 72,736.80

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Solution

The fourth proportional to 73,903.20, 110,854.80 and 72,736.80 is: 109,105.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,903.20 : 110,854.80 = 72,736.80 : x
  2. Step 2: Convert to fraction form
    73,903.20/110,854.80 = 72,736.80/x
  3. Step 3: Cross multiply
    73,903.20x = 110,854.80 × 72,736.80
  4. Step 4: Simplify right side
    73,903.20x = 8,063,223,416.64
  5. Step 5: Solve for x
    x = 8,063,223,416.64/73,903.20
  6. Step 6: Final answer
    x = 109,105.20

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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.