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Finding the Third Proportional to 1,186 and 1,493

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Solution

The third proportional to 1,186 and 1,493 is: 1,879.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186 : 1,493 = 1,493 : x
  2. Step 2: Convert to fraction form
    1,186/1,493 = 1,493/x
  3. Step 3: Cross multiply
    1,186x = 1,493 × 1,493
  4. Step 4: Simplify right side
    1,186x = 2,229,049
  5. Step 5: Solve for x
    x = 2,229,049/1,186
  6. Step 6: Final answer
    x = 1,879.47

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Why These Related Problems?

These problems maintain the same ratio (1.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.