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Finding the Third Proportional to 940 and 1,968

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Solution

The third proportional to 940 and 1,968 is: 4,120.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    940 : 1,968 = 1,968 : x
  2. Step 2: Convert to fraction form
    940/1,968 = 1,968/x
  3. Step 3: Cross multiply
    940x = 1,968 × 1,968
  4. Step 4: Simplify right side
    940x = 3,873,024
  5. Step 5: Solve for x
    x = 3,873,024/940
  6. Step 6: Final answer
    x = 4,120.24

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.