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Finding the Third Proportional to 3,408 and 5,228

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Solution

The third proportional to 3,408 and 5,228 is: 8,019.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408 : 5,228 = 5,228 : x
  2. Step 2: Convert to fraction form
    3,408/5,228 = 5,228/x
  3. Step 3: Cross multiply
    3,408x = 5,228 × 5,228
  4. Step 4: Simplify right side
    3,408x = 27,331,984
  5. Step 5: Solve for x
    x = 27,331,984/3,408
  6. Step 6: Final answer
    x = 8,019.95

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.