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Finding the Fourth Proportional to 303,883.20, 455,168.70 and 264,517.20

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Solution

The fourth proportional to 303,883.20, 455,168.70 and 264,517.20 is: 396,204.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,883.20 : 455,168.70 = 264,517.20 : x
  2. Step 2: Convert to fraction form
    303,883.20/455,168.70 = 264,517.20/x
  3. Step 3: Cross multiply
    303,883.20x = 455,168.70 × 264,517.20
  4. Step 4: Simplify right side
    303,883.20x = 120,399,950,051.64
  5. Step 5: Solve for x
    x = 120,399,950,051.64/303,883.20
  6. Step 6: Final answer
    x = 396,204.69

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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.