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Finding the Third Proportional to 179,984 and 393,868

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Solution

The third proportional to 179,984 and 393,868 is: 861,921.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,984 : 393,868 = 393,868 : x
  2. Step 2: Convert to fraction form
    179,984/393,868 = 393,868/x
  3. Step 3: Cross multiply
    179,984x = 393,868 × 393,868
  4. Step 4: Simplify right side
    179,984x = 155,132,001,424
  5. Step 5: Solve for x
    x = 155,132,001,424/179,984
  6. Step 6: Final answer
    x = 861,921.07

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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.