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Finding the Fourth Proportional to 13,963.35, 20,920.43 and 7,375.02

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Solution

The fourth proportional to 13,963.35, 20,920.43 and 7,375.02 is: 11,049.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,963.35 : 20,920.43 = 7,375.02 : x
  2. Step 2: Convert to fraction form
    13,963.35/20,920.43 = 7,375.02/x
  3. Step 3: Cross multiply
    13,963.35x = 20,920.43 × 7,375.02
  4. Step 4: Simplify right side
    13,963.35x = 154,288,552.78
  5. Step 5: Solve for x
    x = 154,288,552.78/13,963.35
  6. Step 6: Final answer
    x = 11,049.54

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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.