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Finding the Third Proportional to 13,644.25 and 20,382.13

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Solution

The third proportional to 13,644.25 and 20,382.13 is: 30,447.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,644.25 : 20,382.13 = 20,382.13 : x
  2. Step 2: Convert to fraction form
    13,644.25/20,382.13 = 20,382.13/x
  3. Step 3: Cross multiply
    13,644.25x = 20,382.13 × 20,382.13
  4. Step 4: Simplify right side
    13,644.25x = 415,431,019.52
  5. Step 5: Solve for x
    x = 415,431,019.52/13,644.25
  6. Step 6: Final answer
    x = 30,447.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.