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Finding the Third Proportional to 746 and 1,085

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Solution

The third proportional to 746 and 1,085 is: 1,578.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    746 : 1,085 = 1,085 : x
  2. Step 2: Convert to fraction form
    746/1,085 = 1,085/x
  3. Step 3: Cross multiply
    746x = 1,085 × 1,085
  4. Step 4: Simplify right side
    746x = 1,177,225
  5. Step 5: Solve for x
    x = 1,177,225/746
  6. Step 6: Final answer
    x = 1,578.05

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.