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Finding the Fourth Proportional to 193,991.40, 267,744.96 and 121,427.94

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Solution

The fourth proportional to 193,991.40, 267,744.96 and 121,427.94 is: 167,593.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,991.40 : 267,744.96 = 121,427.94 : x
  2. Step 2: Convert to fraction form
    193,991.40/267,744.96 = 121,427.94/x
  3. Step 3: Cross multiply
    193,991.40x = 267,744.96 × 121,427.94
  4. Step 4: Simplify right side
    193,991.40x = 32,511,718,938.18
  5. Step 5: Solve for x
    x = 32,511,718,938.18/193,991.40
  6. Step 6: Final answer
    x = 167,593.61

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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.