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Finding the Third Proportional to 624 and 1,660

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Solution

The third proportional to 624 and 1,660 is: 4,416.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    624 : 1,660 = 1,660 : x
  2. Step 2: Convert to fraction form
    624/1,660 = 1,660/x
  3. Step 3: Cross multiply
    624x = 1,660 × 1,660
  4. Step 4: Simplify right side
    624x = 2,755,600
  5. Step 5: Solve for x
    x = 2,755,600/624
  6. Step 6: Final answer
    x = 4,416.03

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Why These Related Problems?

These problems maintain the same ratio (2.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.