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Finding the Fourth Proportional to 334,108.80, 501,163.20 and 281,620.80

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Solution

The fourth proportional to 334,108.80, 501,163.20 and 281,620.80 is: 422,431.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,108.80 : 501,163.20 = 281,620.80 : x
  2. Step 2: Convert to fraction form
    334,108.80/501,163.20 = 281,620.80/x
  3. Step 3: Cross multiply
    334,108.80x = 501,163.20 × 281,620.80
  4. Step 4: Simplify right side
    334,108.80x = 141,137,981,314.56
  5. Step 5: Solve for x
    x = 141,137,981,314.56/334,108.80
  6. Step 6: Final answer
    x = 422,431.20

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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.