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Finding the Fourth Proportional to 4,979,817.75, 7,469,991.60 and 1,568,371.11

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Solution

The fourth proportional to 4,979,817.75, 7,469,991.60 and 1,568,371.11 is: 2,352,640.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979,817.75 : 7,469,991.60 = 1,568,371.11 : x
  2. Step 2: Convert to fraction form
    4,979,817.75/7,469,991.60 = 1,568,371.11/x
  3. Step 3: Cross multiply
    4,979,817.75x = 7,469,991.60 × 1,568,371.11
  4. Step 4: Simplify right side
    4,979,817.75x = 11,715,719,017,382.68
  5. Step 5: Solve for x
    x = 11,715,719,017,382.68/4,979,817.75
  6. Step 6: Final answer
    x = 2,352,640.12

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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.