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Finding the Fourth Proportional to 193,712.87, 267,452.87 and 121,225.97

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Solution

The fourth proportional to 193,712.87, 267,452.87 and 121,225.97 is: 167,372.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,712.87 : 267,452.87 = 121,225.97 : x
  2. Step 2: Convert to fraction form
    193,712.87/267,452.87 = 121,225.97/x
  3. Step 3: Cross multiply
    193,712.87x = 267,452.87 × 121,225.97
  4. Step 4: Simplify right side
    193,712.87x = 32,422,231,651.64
  5. Step 5: Solve for x
    x = 32,422,231,651.64/193,712.87
  6. Step 6: Final answer
    x = 167,372.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.