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Finding the Third Proportional to 664.50 and 1,461

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Solution

The third proportional to 664.50 and 1,461 is: 3,212.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.50 : 1,461 = 1,461 : x
  2. Step 2: Convert to fraction form
    664.50/1,461 = 1,461/x
  3. Step 3: Cross multiply
    664.50x = 1,461 × 1,461
  4. Step 4: Simplify right side
    664.50x = 2,134,521
  5. Step 5: Solve for x
    x = 2,134,521/664.50
  6. Step 6: Final answer
    x = 3,212.22

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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.