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Finding the Fourth Proportional to 393,414.67, 590,120.97 and 168,629.37

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Solution

The fourth proportional to 393,414.67, 590,120.97 and 168,629.37 is: 252,943.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,414.67 : 590,120.97 = 168,629.37 : x
  2. Step 2: Convert to fraction form
    393,414.67/590,120.97 = 168,629.37/x
  3. Step 3: Cross multiply
    393,414.67x = 590,120.97 × 168,629.37
  4. Step 4: Simplify right side
    393,414.67x = 99,511,727,394.89
  5. Step 5: Solve for x
    x = 99,511,727,394.89/393,414.67
  6. Step 6: Final answer
    x = 252,943.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.