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Finding the Fourth Proportional to 481,084.02, 663,906.78 and 311,613.12

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Solution

The fourth proportional to 481,084.02, 663,906.78 and 311,613.12 is: 430,033.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,084.02 : 663,906.78 = 311,613.12 : x
  2. Step 2: Convert to fraction form
    481,084.02/663,906.78 = 311,613.12/x
  3. Step 3: Cross multiply
    481,084.02x = 663,906.78 × 311,613.12
  4. Step 4: Simplify right side
    481,084.02x = 206,882,063,104.95
  5. Step 5: Solve for x
    x = 206,882,063,104.95/481,084.02
  6. Step 6: Final answer
    x = 430,033.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.