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Finding the Fourth Proportional to 516,351.20, 774,171.60 and 263,141.60

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Solution

The fourth proportional to 516,351.20, 774,171.60 and 263,141.60 is: 394,531.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,351.20 : 774,171.60 = 263,141.60 : x
  2. Step 2: Convert to fraction form
    516,351.20/774,171.60 = 263,141.60/x
  3. Step 3: Cross multiply
    516,351.20x = 774,171.60 × 263,141.60
  4. Step 4: Simplify right side
    516,351.20x = 203,716,753,498.56
  5. Step 5: Solve for x
    x = 203,716,753,498.56/516,351.20
  6. Step 6: Final answer
    x = 394,531.38

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1.5x scale

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.