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Finding the Third Proportional to 3,984 and 6,543

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Solution

The third proportional to 3,984 and 6,543 is: 10,745.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984 : 6,543 = 6,543 : x
  2. Step 2: Convert to fraction form
    3,984/6,543 = 6,543/x
  3. Step 3: Cross multiply
    3,984x = 6,543 × 6,543
  4. Step 4: Simplify right side
    3,984x = 42,810,849
  5. Step 5: Solve for x
    x = 42,810,849/3,984
  6. Step 6: Final answer
    x = 10,745.70

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.