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Finding the Third Proportional to 12,408 and 26,216

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Solution

The third proportional to 12,408 and 26,216 is: 55,389.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408 : 26,216 = 26,216 : x
  2. Step 2: Convert to fraction form
    12,408/26,216 = 26,216/x
  3. Step 3: Cross multiply
    12,408x = 26,216 × 26,216
  4. Step 4: Simplify right side
    12,408x = 687,278,656
  5. Step 5: Solve for x
    x = 687,278,656/12,408
  6. Step 6: Final answer
    x = 55,389.96

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.