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Finding the Third Proportional to 945 and 1,267

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Solution

The third proportional to 945 and 1,267 is: 1,698.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    945 : 1,267 = 1,267 : x
  2. Step 2: Convert to fraction form
    945/1,267 = 1,267/x
  3. Step 3: Cross multiply
    945x = 1,267 × 1,267
  4. Step 4: Simplify right side
    945x = 1,605,289
  5. Step 5: Solve for x
    x = 1,605,289/945
  6. Step 6: Final answer
    x = 1,698.72

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.