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Finding the Fourth Proportional to 2,867,843.78, 3,957,674.28 and 1,644,348.50

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Solution

The fourth proportional to 2,867,843.78, 3,957,674.28 and 1,644,348.50 is: 2,269,229.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867,843.78 : 3,957,674.28 = 1,644,348.50 : x
  2. Step 2: Convert to fraction form
    2,867,843.78/3,957,674.28 = 1,644,348.50/x
  3. Step 3: Cross multiply
    2,867,843.78x = 3,957,674.28 × 1,644,348.50
  4. Step 4: Simplify right side
    2,867,843.78x = 6,507,795,765,806.58
  5. Step 5: Solve for x
    x = 6,507,795,765,806.58/2,867,843.78
  6. Step 6: Final answer
    x = 2,269,229.52

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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.