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Finding the Fourth Proportional to 396,759.80, 595,022.88 and 216,638.48

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Solution

The fourth proportional to 396,759.80, 595,022.88 and 216,638.48 is: 324,893.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,759.80 : 595,022.88 = 216,638.48 : x
  2. Step 2: Convert to fraction form
    396,759.80/595,022.88 = 216,638.48/x
  3. Step 3: Cross multiply
    396,759.80x = 595,022.88 × 216,638.48
  4. Step 4: Simplify right side
    396,759.80x = 128,904,852,288.42
  5. Step 5: Solve for x
    x = 128,904,852,288.42/396,759.80
  6. Step 6: Final answer
    x = 324,893.93

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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.