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Finding the Third Proportional to 958 and 1,940

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Solution

The third proportional to 958 and 1,940 is: 3,928.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    958 : 1,940 = 1,940 : x
  2. Step 2: Convert to fraction form
    958/1,940 = 1,940/x
  3. Step 3: Cross multiply
    958x = 1,940 × 1,940
  4. Step 4: Simplify right side
    958x = 3,763,600
  5. Step 5: Solve for x
    x = 3,763,600/958
  6. Step 6: Final answer
    x = 3,928.60

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.