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Finding the Third Proportional to 222,147 and 316,600

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Solution

The third proportional to 222,147 and 316,600 is: 451,212.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,147 : 316,600 = 316,600 : x
  2. Step 2: Convert to fraction form
    222,147/316,600 = 316,600/x
  3. Step 3: Cross multiply
    222,147x = 316,600 × 316,600
  4. Step 4: Simplify right side
    222,147x = 100,235,560,000
  5. Step 5: Solve for x
    x = 100,235,560,000/222,147
  6. Step 6: Final answer
    x = 451,212.76

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.