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Finding the Third Proportional to 636.75 and 1,134

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Solution

The third proportional to 636.75 and 1,134 is: 2,019.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.75 : 1,134 = 1,134 : x
  2. Step 2: Convert to fraction form
    636.75/1,134 = 1,134/x
  3. Step 3: Cross multiply
    636.75x = 1,134 × 1,134
  4. Step 4: Simplify right side
    636.75x = 1,285,956
  5. Step 5: Solve for x
    x = 1,285,956/636.75
  6. Step 6: Final answer
    x = 2,019.56

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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.