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Finding the Fourth Proportional to 396,861.54, 547,352.28 and 261,034.98

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Solution

The fourth proportional to 396,861.54, 547,352.28 and 261,034.98 is: 360,020.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,861.54 : 547,352.28 = 261,034.98 : x
  2. Step 2: Convert to fraction form
    396,861.54/547,352.28 = 261,034.98/x
  3. Step 3: Cross multiply
    396,861.54x = 547,352.28 × 261,034.98
  4. Step 4: Simplify right side
    396,861.54x = 142,878,091,462.75
  5. Step 5: Solve for x
    x = 142,878,091,462.75/396,861.54
  6. Step 6: Final answer
    x = 360,020.00

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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.