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Finding the Fourth Proportional to 41,308.57, 61,965.89 and 11,728.79

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Solution

The fourth proportional to 41,308.57, 61,965.89 and 11,728.79 is: 17,594.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,308.57 : 61,965.89 = 11,728.79 : x
  2. Step 2: Convert to fraction form
    41,308.57/61,965.89 = 11,728.79/x
  3. Step 3: Cross multiply
    41,308.57x = 61,965.89 × 11,728.79
  4. Step 4: Simplify right side
    41,308.57x = 726,784,910.97
  5. Step 5: Solve for x
    x = 726,784,910.97/41,308.57
  6. Step 6: Final answer
    x = 17,594.05

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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.