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Finding the Fourth Proportional to 96,668.80, 145,003.20 and 88,067.20

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Solution

The fourth proportional to 96,668.80, 145,003.20 and 88,067.20 is: 132,100.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,668.80 : 145,003.20 = 88,067.20 : x
  2. Step 2: Convert to fraction form
    96,668.80/145,003.20 = 88,067.20/x
  3. Step 3: Cross multiply
    96,668.80x = 145,003.20 × 88,067.20
  4. Step 4: Simplify right side
    96,668.80x = 12,770,025,815.04
  5. Step 5: Solve for x
    x = 12,770,025,815.04/96,668.80
  6. Step 6: Final answer
    x = 132,100.80

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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.