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Finding the Third Proportional to 621,812 and 1,342,876

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Solution

The third proportional to 621,812 and 1,342,876 is: 2,900,098.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,812 : 1,342,876 = 1,342,876 : x
  2. Step 2: Convert to fraction form
    621,812/1,342,876 = 1,342,876/x
  3. Step 3: Cross multiply
    621,812x = 1,342,876 × 1,342,876
  4. Step 4: Simplify right side
    621,812x = 1,803,315,951,376
  5. Step 5: Solve for x
    x = 1,803,315,951,376/621,812
  6. Step 6: Final answer
    x = 2,900,098.34

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.