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Finding the Fourth Proportional to 414,044.39, 620,623.65 and 214,163.54

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Solution

The fourth proportional to 414,044.39, 620,623.65 and 214,163.54 is: 321,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,044.39 : 620,623.65 = 214,163.54 : x
  2. Step 2: Convert to fraction form
    414,044.39/620,623.65 = 214,163.54/x
  3. Step 3: Cross multiply
    414,044.39x = 620,623.65 × 214,163.54
  4. Step 4: Simplify right side
    414,044.39x = 132,914,957,891.72
  5. Step 5: Solve for x
    x = 132,914,957,891.72/414,044.39
  6. Step 6: Final answer
    x = 321,016.20

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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.