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Finding the Third Proportional to 156,980 and 336,568

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Solution

The third proportional to 156,980 and 336,568 is: 721,607.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,980 : 336,568 = 336,568 : x
  2. Step 2: Convert to fraction form
    156,980/336,568 = 336,568/x
  3. Step 3: Cross multiply
    156,980x = 336,568 × 336,568
  4. Step 4: Simplify right side
    156,980x = 113,278,018,624
  5. Step 5: Solve for x
    x = 113,278,018,624/156,980
  6. Step 6: Final answer
    x = 721,607.97

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.