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Finding the Third Proportional to 13,175.25 and 20,310

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Solution

The third proportional to 13,175.25 and 20,310 is: 31,308.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,175.25 : 20,310 = 20,310 : x
  2. Step 2: Convert to fraction form
    13,175.25/20,310 = 20,310/x
  3. Step 3: Cross multiply
    13,175.25x = 20,310 × 20,310
  4. Step 4: Simplify right side
    13,175.25x = 412,496,100
  5. Step 5: Solve for x
    x = 412,496,100/13,175.25
  6. Step 6: Final answer
    x = 31,308.41

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.