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Finding the Fourth Proportional to 71,911.80, 107,850.42 and 36,833.40

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Solution

The fourth proportional to 71,911.80, 107,850.42 and 36,833.40 is: 55,241.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,911.80 : 107,850.42 = 36,833.40 : x
  2. Step 2: Convert to fraction form
    71,911.80/107,850.42 = 36,833.40/x
  3. Step 3: Cross multiply
    71,911.80x = 107,850.42 × 36,833.40
  4. Step 4: Simplify right side
    71,911.80x = 3,972,497,660.03
  5. Step 5: Solve for x
    x = 3,972,497,660.03/71,911.80
  6. Step 6: Final answer
    x = 55,241.25

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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.