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Finding the Third Proportional to 13,175.25 and 20,091.75

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Solution

The third proportional to 13,175.25 and 20,091.75 is: 30,639.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,175.25 : 20,091.75 = 20,091.75 : x
  2. Step 2: Convert to fraction form
    13,175.25/20,091.75 = 20,091.75/x
  3. Step 3: Cross multiply
    13,175.25x = 20,091.75 × 20,091.75
  4. Step 4: Simplify right side
    13,175.25x = 403,678,418.06
  5. Step 5: Solve for x
    x = 403,678,418.06/13,175.25
  6. Step 6: Final answer
    x = 30,639.15

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.