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Finding the Fourth Proportional to 343,261.20, 514,200.60 and 238,198.80

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Solution

The fourth proportional to 343,261.20, 514,200.60 and 238,198.80 is: 356,818.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,261.20 : 514,200.60 = 238,198.80 : x
  2. Step 2: Convert to fraction form
    343,261.20/514,200.60 = 238,198.80/x
  3. Step 3: Cross multiply
    343,261.20x = 514,200.60 × 238,198.80
  4. Step 4: Simplify right side
    343,261.20x = 122,481,965,879.28
  5. Step 5: Solve for x
    x = 122,481,965,879.28/343,261.20
  6. Step 6: Final answer
    x = 356,818.56

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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.