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Finding the Third Proportional to 724.50 and 1,571

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Solution

The third proportional to 724.50 and 1,571 is: 3,406.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.50 : 1,571 = 1,571 : x
  2. Step 2: Convert to fraction form
    724.50/1,571 = 1,571/x
  3. Step 3: Cross multiply
    724.50x = 1,571 × 1,571
  4. Step 4: Simplify right side
    724.50x = 2,468,041
  5. Step 5: Solve for x
    x = 2,468,041/724.50
  6. Step 6: Final answer
    x = 3,406.54

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.