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Finding the Third Proportional to 381,183 and 811,668

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Solution

The third proportional to 381,183 and 811,668 is: 1,728,316.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,183 : 811,668 = 811,668 : x
  2. Step 2: Convert to fraction form
    381,183/811,668 = 811,668/x
  3. Step 3: Cross multiply
    381,183x = 811,668 × 811,668
  4. Step 4: Simplify right side
    381,183x = 658,804,942,224
  5. Step 5: Solve for x
    x = 658,804,942,224/381,183
  6. Step 6: Final answer
    x = 1,728,316.69

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.