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Finding the Fourth Proportional to 96,267.20, 144,400.80 and 81,060.80

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Solution

The fourth proportional to 96,267.20, 144,400.80 and 81,060.80 is: 121,591.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,267.20 : 144,400.80 = 81,060.80 : x
  2. Step 2: Convert to fraction form
    96,267.20/144,400.80 = 81,060.80/x
  3. Step 3: Cross multiply
    96,267.20x = 144,400.80 × 81,060.80
  4. Step 4: Simplify right side
    96,267.20x = 11,705,244,368.64
  5. Step 5: Solve for x
    x = 11,705,244,368.64/96,267.20
  6. Step 6: Final answer
    x = 121,591.20

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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.