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Finding the Third Proportional to 1,940 and 3,020

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Solution

The third proportional to 1,940 and 3,020 is: 4,701.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940 : 3,020 = 3,020 : x
  2. Step 2: Convert to fraction form
    1,940/3,020 = 3,020/x
  3. Step 3: Cross multiply
    1,940x = 3,020 × 3,020
  4. Step 4: Simplify right side
    1,940x = 9,120,400
  5. Step 5: Solve for x
    x = 9,120,400/1,940
  6. Step 6: Final answer
    x = 4,701.24

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.