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Finding the Third Proportional to 179,969 and 393,837

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Solution

The third proportional to 179,969 and 393,837 is: 861,857.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,969 : 393,837 = 393,837 : x
  2. Step 2: Convert to fraction form
    179,969/393,837 = 393,837/x
  3. Step 3: Cross multiply
    179,969x = 393,837 × 393,837
  4. Step 4: Simplify right side
    179,969x = 155,107,582,569
  5. Step 5: Solve for x
    x = 155,107,582,569/179,969
  6. Step 6: Final answer
    x = 861,857.22

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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.