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Finding the Fourth Proportional to 5,978,407.20, 8,967,610.80 and 3,458,983.20

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Solution

The fourth proportional to 5,978,407.20, 8,967,610.80 and 3,458,983.20 is: 5,188,474.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,978,407.20 : 8,967,610.80 = 3,458,983.20 : x
  2. Step 2: Convert to fraction form
    5,978,407.20/8,967,610.80 = 3,458,983.20/x
  3. Step 3: Cross multiply
    5,978,407.20x = 8,967,610.80 × 3,458,983.20
  4. Step 4: Simplify right side
    5,978,407.20x = 31,018,815,101,338.56
  5. Step 5: Solve for x
    x = 31,018,815,101,338.56/5,978,407.20
  6. Step 6: Final answer
    x = 5,188,474.80

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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.