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Finding the Fourth Proportional to 11,067.68, 16,605 and 3,276.56

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Solution

The fourth proportional to 11,067.68, 16,605 and 3,276.56 is: 4,915.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,067.68 : 16,605 = 3,276.56 : x
  2. Step 2: Convert to fraction form
    11,067.68/16,605 = 3,276.56/x
  3. Step 3: Cross multiply
    11,067.68x = 16,605 × 3,276.56
  4. Step 4: Simplify right side
    11,067.68x = 54,407,278.80
  5. Step 5: Solve for x
    x = 54,407,278.80/11,067.68
  6. Step 6: Final answer
    x = 4,915.87

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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.