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Finding the Fourth Proportional to 96,031.20, 144,046.80 and 80,824.80

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Solution

The fourth proportional to 96,031.20, 144,046.80 and 80,824.80 is: 121,237.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,031.20 : 144,046.80 = 80,824.80 : x
  2. Step 2: Convert to fraction form
    96,031.20/144,046.80 = 80,824.80/x
  3. Step 3: Cross multiply
    96,031.20x = 144,046.80 × 80,824.80
  4. Step 4: Simplify right side
    96,031.20x = 11,642,553,800.64
  5. Step 5: Solve for x
    x = 11,642,553,800.64/96,031.20
  6. Step 6: Final answer
    x = 121,237.20

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1.5x scale

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.