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Finding the Third Proportional to 958 and 1,245

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Solution

The third proportional to 958 and 1,245 is: 1,617.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    958 : 1,245 = 1,245 : x
  2. Step 2: Convert to fraction form
    958/1,245 = 1,245/x
  3. Step 3: Cross multiply
    958x = 1,245 × 1,245
  4. Step 4: Simplify right side
    958x = 1,550,025
  5. Step 5: Solve for x
    x = 1,550,025/958
  6. Step 6: Final answer
    x = 1,617.98

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.