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Finding the Third Proportional to 737 and 1,115

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Solution

The third proportional to 737 and 1,115 is: 1,686.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    737 : 1,115 = 1,115 : x
  2. Step 2: Convert to fraction form
    737/1,115 = 1,115/x
  3. Step 3: Cross multiply
    737x = 1,115 × 1,115
  4. Step 4: Simplify right side
    737x = 1,243,225
  5. Step 5: Solve for x
    x = 1,243,225/737
  6. Step 6: Final answer
    x = 1,686.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.