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Finding the Third Proportional to 13,939.13 and 30,645.75

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Solution

The third proportional to 13,939.13 and 30,645.75 is: 67,375.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.13 : 30,645.75 = 30,645.75 : x
  2. Step 2: Convert to fraction form
    13,939.13/30,645.75 = 30,645.75/x
  3. Step 3: Cross multiply
    13,939.13x = 30,645.75 × 30,645.75
  4. Step 4: Simplify right side
    13,939.13x = 939,161,993.06
  5. Step 5: Solve for x
    x = 939,161,993.06/13,939.13
  6. Step 6: Final answer
    x = 67,375.96

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.