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Finding the Fourth Proportional to 321,753.61, 444,072.97 and 178,559.79

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Solution

The fourth proportional to 321,753.61, 444,072.97 and 178,559.79 is: 246,441.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,753.61 : 444,072.97 = 178,559.79 : x
  2. Step 2: Convert to fraction form
    321,753.61/444,072.97 = 178,559.79/x
  3. Step 3: Cross multiply
    321,753.61x = 444,072.97 × 178,559.79
  4. Step 4: Simplify right side
    321,753.61x = 79,293,574,825.80
  5. Step 5: Solve for x
    x = 79,293,574,825.80/321,753.61
  6. Step 6: Final answer
    x = 246,441.91

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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.