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Finding the Fourth Proportional to 367,372.80, 551,059.20 and 320,716.80

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Solution

The fourth proportional to 367,372.80, 551,059.20 and 320,716.80 is: 481,075.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,372.80 : 551,059.20 = 320,716.80 : x
  2. Step 2: Convert to fraction form
    367,372.80/551,059.20 = 320,716.80/x
  3. Step 3: Cross multiply
    367,372.80x = 551,059.20 × 320,716.80
  4. Step 4: Simplify right side
    367,372.80x = 176,733,943,234.56
  5. Step 5: Solve for x
    x = 176,733,943,234.56/367,372.80
  6. Step 6: Final answer
    x = 481,075.20

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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.