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Finding the Third Proportional to 664 and 1,525

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Solution

The third proportional to 664 and 1,525 is: 3,502.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    664 : 1,525 = 1,525 : x
  2. Step 2: Convert to fraction form
    664/1,525 = 1,525/x
  3. Step 3: Cross multiply
    664x = 1,525 × 1,525
  4. Step 4: Simplify right side
    664x = 2,325,625
  5. Step 5: Solve for x
    x = 2,325,625/664
  6. Step 6: Final answer
    x = 3,502.45

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.