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Finding the Third Proportional to 196,812 and 431,451

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Solution

The third proportional to 196,812 and 431,451 is: 945,826.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,812 : 431,451 = 431,451 : x
  2. Step 2: Convert to fraction form
    196,812/431,451 = 431,451/x
  3. Step 3: Cross multiply
    196,812x = 431,451 × 431,451
  4. Step 4: Simplify right side
    196,812x = 186,149,965,401
  5. Step 5: Solve for x
    x = 186,149,965,401/196,812
  6. Step 6: Final answer
    x = 945,826.30

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.