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Finding the Third Proportional to 2,647.13 and 4,408.31

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Solution

The third proportional to 2,647.13 and 4,408.31 is: 7,341.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,647.13 : 4,408.31 = 4,408.31 : x
  2. Step 2: Convert to fraction form
    2,647.13/4,408.31 = 4,408.31/x
  3. Step 3: Cross multiply
    2,647.13x = 4,408.31 × 4,408.31
  4. Step 4: Simplify right side
    2,647.13x = 19,433,219.10
  5. Step 5: Solve for x
    x = 19,433,219.10/2,647.13
  6. Step 6: Final answer
    x = 7,341.25

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.