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Finding the Third Proportional to 179,866 and 393,994

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Solution

The third proportional to 179,866 and 393,994 is: 863,038.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,866 : 393,994 = 393,994 : x
  2. Step 2: Convert to fraction form
    179,866/393,994 = 393,994/x
  3. Step 3: Cross multiply
    179,866x = 393,994 × 393,994
  4. Step 4: Simplify right side
    179,866x = 155,231,272,036
  5. Step 5: Solve for x
    x = 155,231,272,036/179,866
  6. Step 6: Final answer
    x = 863,038.44

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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.