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Finding the Third Proportional to 5,389 and 11,863

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Solution

The third proportional to 5,389 and 11,863 is: 26,114.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389 : 11,863 = 11,863 : x
  2. Step 2: Convert to fraction form
    5,389/11,863 = 11,863/x
  3. Step 3: Cross multiply
    5,389x = 11,863 × 11,863
  4. Step 4: Simplify right side
    5,389x = 140,730,769
  5. Step 5: Solve for x
    x = 140,730,769/5,389
  6. Step 6: Final answer
    x = 26,114.45

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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.