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Finding the Third Proportional to 5,408 and 8,055

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Solution

The third proportional to 5,408 and 8,055 is: 11,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408 : 8,055 = 8,055 : x
  2. Step 2: Convert to fraction form
    5,408/8,055 = 8,055/x
  3. Step 3: Cross multiply
    5,408x = 8,055 × 8,055
  4. Step 4: Simplify right side
    5,408x = 64,883,025
  5. Step 5: Solve for x
    x = 64,883,025/5,408
  6. Step 6: Final answer
    x = 11,997.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.