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Finding the Fourth Proportional to 2,379,638, 3,568,115.60 and 781,772.06

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Solution

The fourth proportional to 2,379,638, 3,568,115.60 and 781,772.06 is: 1,172,217.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379,638 : 3,568,115.60 = 781,772.06 : x
  2. Step 2: Convert to fraction form
    2,379,638/3,568,115.60 = 781,772.06/x
  3. Step 3: Cross multiply
    2,379,638x = 3,568,115.60 × 781,772.06
  4. Step 4: Simplify right side
    2,379,638x = 2,789,453,082,930.14
  5. Step 5: Solve for x
    x = 2,789,453,082,930.14/2,379,638
  6. Step 6: Final answer
    x = 1,172,217.41

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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.