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Finding the Third Proportional to 19,620 and 43,074

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Solution

The third proportional to 19,620 and 43,074 is: 94,565.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,620 : 43,074 = 43,074 : x
  2. Step 2: Convert to fraction form
    19,620/43,074 = 43,074/x
  3. Step 3: Cross multiply
    19,620x = 43,074 × 43,074
  4. Step 4: Simplify right side
    19,620x = 1,855,369,476
  5. Step 5: Solve for x
    x = 1,855,369,476/19,620
  6. Step 6: Final answer
    x = 94,565.21

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.