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Finding the Third Proportional to 679.75 and 1,433

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Solution

The third proportional to 679.75 and 1,433 is: 3,020.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.75 : 1,433 = 1,433 : x
  2. Step 2: Convert to fraction form
    679.75/1,433 = 1,433/x
  3. Step 3: Cross multiply
    679.75x = 1,433 × 1,433
  4. Step 4: Simplify right side
    679.75x = 2,053,489
  5. Step 5: Solve for x
    x = 2,053,489/679.75
  6. Step 6: Final answer
    x = 3,020.95

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.