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Finding the Fourth Proportional to 321,796.72, 444,072.66 and 178,553.68

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Solution

The fourth proportional to 321,796.72, 444,072.66 and 178,553.68 is: 246,400.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,796.72 : 444,072.66 = 178,553.68 : x
  2. Step 2: Convert to fraction form
    321,796.72/444,072.66 = 178,553.68/x
  3. Step 3: Cross multiply
    321,796.72x = 444,072.66 × 178,553.68
  4. Step 4: Simplify right side
    321,796.72x = 79,290,807,630.39
  5. Step 5: Solve for x
    x = 79,290,807,630.39/321,796.72
  6. Step 6: Final answer
    x = 246,400.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.