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Finding the Third Proportional to 718 and 1,147

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Solution

The third proportional to 718 and 1,147 is: 1,832.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    718 : 1,147 = 1,147 : x
  2. Step 2: Convert to fraction form
    718/1,147 = 1,147/x
  3. Step 3: Cross multiply
    718x = 1,147 × 1,147
  4. Step 4: Simplify right side
    718x = 1,315,609
  5. Step 5: Solve for x
    x = 1,315,609/718
  6. Step 6: Final answer
    x = 1,832.32

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.