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Finding the Fourth Proportional to 96,825.60, 145,324.80 and 83,692.80

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Solution

The fourth proportional to 96,825.60, 145,324.80 and 83,692.80 is: 125,613.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,825.60 : 145,324.80 = 83,692.80 : x
  2. Step 2: Convert to fraction form
    96,825.60/145,324.80 = 83,692.80/x
  3. Step 3: Cross multiply
    96,825.60x = 145,324.80 × 83,692.80
  4. Step 4: Simplify right side
    96,825.60x = 12,162,639,421.44
  5. Step 5: Solve for x
    x = 12,162,639,421.44/96,825.60
  6. Step 6: Final answer
    x = 125,613.88

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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.