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Finding the Third Proportional to 13,151.25 and 19,863

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Solution

The third proportional to 13,151.25 and 19,863 is: 30,000.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.25 : 19,863 = 19,863 : x
  2. Step 2: Convert to fraction form
    13,151.25/19,863 = 19,863/x
  3. Step 3: Cross multiply
    13,151.25x = 19,863 × 19,863
  4. Step 4: Simplify right side
    13,151.25x = 394,538,769
  5. Step 5: Solve for x
    x = 394,538,769/13,151.25
  6. Step 6: Final answer
    x = 30,000.10

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.