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Finding the Fourth Proportional to 41,310.78, 61,966.77 and 11,728.68

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Solution

The fourth proportional to 41,310.78, 61,966.77 and 11,728.68 is: 17,593.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,310.78 : 61,966.77 = 11,728.68 : x
  2. Step 2: Convert to fraction form
    41,310.78/61,966.77 = 11,728.68/x
  3. Step 3: Cross multiply
    41,310.78x = 61,966.77 × 11,728.68
  4. Step 4: Simplify right side
    41,310.78x = 726,788,415.96
  5. Step 5: Solve for x
    x = 726,788,415.96/41,310.78
  6. Step 6: Final answer
    x = 17,593.19

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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.