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Finding the Fourth Proportional to 171,948.60, 258,117.30 and 132,679.80

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Solution

The fourth proportional to 171,948.60, 258,117.30 and 132,679.80 is: 199,169.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,948.60 : 258,117.30 = 132,679.80 : x
  2. Step 2: Convert to fraction form
    171,948.60/258,117.30 = 132,679.80/x
  3. Step 3: Cross multiply
    171,948.60x = 258,117.30 × 132,679.80
  4. Step 4: Simplify right side
    171,948.60x = 34,246,951,740.54
  5. Step 5: Solve for x
    x = 34,246,951,740.54/171,948.60
  6. Step 6: Final answer
    x = 199,169.70

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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.