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Finding the Third Proportional to 739.50 and 1,617

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Solution

The third proportional to 739.50 and 1,617 is: 3,535.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.50 : 1,617 = 1,617 : x
  2. Step 2: Convert to fraction form
    739.50/1,617 = 1,617/x
  3. Step 3: Cross multiply
    739.50x = 1,617 × 1,617
  4. Step 4: Simplify right side
    739.50x = 2,614,689
  5. Step 5: Solve for x
    x = 2,614,689/739.50
  6. Step 6: Final answer
    x = 3,535.75

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.