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Finding the Fourth Proportional to 220,815.60, 331,223.40 and 132,023.40

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Solution

The fourth proportional to 220,815.60, 331,223.40 and 132,023.40 is: 198,035.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,815.60 : 331,223.40 = 132,023.40 : x
  2. Step 2: Convert to fraction form
    220,815.60/331,223.40 = 132,023.40/x
  3. Step 3: Cross multiply
    220,815.60x = 331,223.40 × 132,023.40
  4. Step 4: Simplify right side
    220,815.60x = 43,729,239,427.56
  5. Step 5: Solve for x
    x = 43,729,239,427.56/220,815.60
  6. Step 6: Final answer
    x = 198,035.10

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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.