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Finding the Third Proportional to 670 and 1,134

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Solution

The third proportional to 670 and 1,134 is: 1,919.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    670 : 1,134 = 1,134 : x
  2. Step 2: Convert to fraction form
    670/1,134 = 1,134/x
  3. Step 3: Cross multiply
    670x = 1,134 × 1,134
  4. Step 4: Simplify right side
    670x = 1,285,956
  5. Step 5: Solve for x
    x = 1,285,956/670
  6. Step 6: Final answer
    x = 1,919.34

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Why These Related Problems?

These problems maintain the same ratio (1.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.