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Finding the Fourth Proportional to 231,195.20, 346,843.20 and 131,403.20

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Solution

The fourth proportional to 231,195.20, 346,843.20 and 131,403.20 is: 197,133.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,195.20 : 346,843.20 = 131,403.20 : x
  2. Step 2: Convert to fraction form
    231,195.20/346,843.20 = 131,403.20/x
  3. Step 3: Cross multiply
    231,195.20x = 346,843.20 × 131,403.20
  4. Step 4: Simplify right side
    231,195.20x = 45,576,306,378.24
  5. Step 5: Solve for x
    x = 45,576,306,378.24/231,195.20
  6. Step 6: Final answer
    x = 197,133.45

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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.