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Finding the Fourth Proportional to 412,171.62, 618,269.58 and 351,819.59

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Solution

The fourth proportional to 412,171.62, 618,269.58 and 351,819.59 is: 527,739.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,171.62 : 618,269.58 = 351,819.59 : x
  2. Step 2: Convert to fraction form
    412,171.62/618,269.58 = 351,819.59/x
  3. Step 3: Cross multiply
    412,171.62x = 618,269.58 × 351,819.59
  4. Step 4: Simplify right side
    412,171.62x = 217,519,347,053.72
  5. Step 5: Solve for x
    x = 217,519,347,053.72/412,171.62
  6. Step 6: Final answer
    x = 527,739.75

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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.