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Finding the Third Proportional to 704 and 1,255

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Solution

The third proportional to 704 and 1,255 is: 2,237.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    704 : 1,255 = 1,255 : x
  2. Step 2: Convert to fraction form
    704/1,255 = 1,255/x
  3. Step 3: Cross multiply
    704x = 1,255 × 1,255
  4. Step 4: Simplify right side
    704x = 1,575,025
  5. Step 5: Solve for x
    x = 1,575,025/704
  6. Step 6: Final answer
    x = 2,237.25

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.