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Finding the Third Proportional to 669.50 and 1,460

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Solution

The third proportional to 669.50 and 1,460 is: 3,183.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.50 : 1,460 = 1,460 : x
  2. Step 2: Convert to fraction form
    669.50/1,460 = 1,460/x
  3. Step 3: Cross multiply
    669.50x = 1,460 × 1,460
  4. Step 4: Simplify right side
    669.50x = 2,131,600
  5. Step 5: Solve for x
    x = 2,131,600/669.50
  6. Step 6: Final answer
    x = 3,183.87

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.