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Finding the Fourth Proportional to 303,839.70, 455,759.55 and 82,223.70

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Solution

The fourth proportional to 303,839.70, 455,759.55 and 82,223.70 is: 123,335.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,839.70 : 455,759.55 = 82,223.70 : x
  2. Step 2: Convert to fraction form
    303,839.70/455,759.55 = 82,223.70/x
  3. Step 3: Cross multiply
    303,839.70x = 455,759.55 × 82,223.70
  4. Step 4: Simplify right side
    303,839.70x = 37,474,236,511.34
  5. Step 5: Solve for x
    x = 37,474,236,511.34/303,839.70
  6. Step 6: Final answer
    x = 123,335.55

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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.