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Finding the Third Proportional to 993 and 1,543

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Solution

The third proportional to 993 and 1,543 is: 2,397.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    993 : 1,543 = 1,543 : x
  2. Step 2: Convert to fraction form
    993/1,543 = 1,543/x
  3. Step 3: Cross multiply
    993x = 1,543 × 1,543
  4. Step 4: Simplify right side
    993x = 2,380,849
  5. Step 5: Solve for x
    x = 2,380,849/993
  6. Step 6: Final answer
    x = 2,397.63

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.