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Finding the Fourth Proportional to 11,169.84, 16,754.72 and 3,378.64

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Solution

The fourth proportional to 11,169.84, 16,754.72 and 3,378.64 is: 5,067.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,169.84 : 16,754.72 = 3,378.64 : x
  2. Step 2: Convert to fraction form
    11,169.84/16,754.72 = 3,378.64/x
  3. Step 3: Cross multiply
    11,169.84x = 16,754.72 × 3,378.64
  4. Step 4: Simplify right side
    11,169.84x = 56,608,167.18
  5. Step 5: Solve for x
    x = 56,608,167.18/11,169.84
  6. Step 6: Final answer
    x = 5,067.95

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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.