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Finding the Third Proportional to 1,997.25 and 4,392

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Solution

The third proportional to 1,997.25 and 4,392 is: 9,658.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.25 : 4,392 = 4,392 : x
  2. Step 2: Convert to fraction form
    1,997.25/4,392 = 4,392/x
  3. Step 3: Cross multiply
    1,997.25x = 4,392 × 4,392
  4. Step 4: Simplify right side
    1,997.25x = 19,289,664
  5. Step 5: Solve for x
    x = 19,289,664/1,997.25
  6. Step 6: Final answer
    x = 9,658.11

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.