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Finding the Fourth Proportional to 107,793.89, 148,757.21 and 61,860.92

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Solution

The fourth proportional to 107,793.89, 148,757.21 and 61,860.92 is: 85,369.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,793.89 : 148,757.21 = 61,860.92 : x
  2. Step 2: Convert to fraction form
    107,793.89/148,757.21 = 61,860.92/x
  3. Step 3: Cross multiply
    107,793.89x = 148,757.21 × 61,860.92
  4. Step 4: Simplify right side
    107,793.89x = 9,202,257,046.12
  5. Step 5: Solve for x
    x = 9,202,257,046.12/107,793.89
  6. Step 6: Final answer
    x = 85,369.01

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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.