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Finding the Fourth Proportional to 49,847.88, 74,785.94 and 20,286.94

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Solution

The fourth proportional to 49,847.88, 74,785.94 and 20,286.94 is: 30,436.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,847.88 : 74,785.94 = 20,286.94 : x
  2. Step 2: Convert to fraction form
    49,847.88/74,785.94 = 20,286.94/x
  3. Step 3: Cross multiply
    49,847.88x = 74,785.94 × 20,286.94
  4. Step 4: Simplify right side
    49,847.88x = 1,517,177,877.62
  5. Step 5: Solve for x
    x = 1,517,177,877.62/49,847.88
  6. Step 6: Final answer
    x = 30,436.16

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1.5x scale

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.