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Finding the Fourth Proportional to 193,920.84, 267,607.20 and 107,879.40

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Solution

The fourth proportional to 193,920.84, 267,607.20 and 107,879.40 is: 148,871.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,920.84 : 267,607.20 = 107,879.40 : x
  2. Step 2: Convert to fraction form
    193,920.84/267,607.20 = 107,879.40/x
  3. Step 3: Cross multiply
    193,920.84x = 267,607.20 × 107,879.40
  4. Step 4: Simplify right side
    193,920.84x = 28,869,304,171.68
  5. Step 5: Solve for x
    x = 28,869,304,171.68/193,920.84
  6. Step 6: Final answer
    x = 148,871.59

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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.