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Finding the Fourth Proportional to 321,754.61, 444,074.35 and 178,560.79

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Solution

The fourth proportional to 321,754.61, 444,074.35 and 178,560.79 is: 246,443.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,754.61 : 444,074.35 = 178,560.79 : x
  2. Step 2: Convert to fraction form
    321,754.61/444,074.35 = 178,560.79/x
  3. Step 3: Cross multiply
    321,754.61x = 444,074.35 × 178,560.79
  4. Step 4: Simplify right side
    321,754.61x = 79,294,266,754.74
  5. Step 5: Solve for x
    x = 79,294,266,754.74/321,754.61
  6. Step 6: Final answer
    x = 246,443.30

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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.