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Finding the Third Proportional to 975 and 2,107

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Solution

The third proportional to 975 and 2,107 is: 4,553.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    975 : 2,107 = 2,107 : x
  2. Step 2: Convert to fraction form
    975/2,107 = 2,107/x
  3. Step 3: Cross multiply
    975x = 2,107 × 2,107
  4. Step 4: Simplify right side
    975x = 4,439,449
  5. Step 5: Solve for x
    x = 4,439,449/975
  6. Step 6: Final answer
    x = 4,553.28

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.