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Finding the Fourth Proportional to 132,408.60, 198,612.90 and 121,522.20

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Solution

The fourth proportional to 132,408.60, 198,612.90 and 121,522.20 is: 182,283.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,408.60 : 198,612.90 = 121,522.20 : x
  2. Step 2: Convert to fraction form
    132,408.60/198,612.90 = 121,522.20/x
  3. Step 3: Cross multiply
    132,408.60x = 198,612.90 × 121,522.20
  4. Step 4: Simplify right side
    132,408.60x = 24,135,876,556.38
  5. Step 5: Solve for x
    x = 24,135,876,556.38/132,408.60
  6. Step 6: Final answer
    x = 182,283.30

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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.