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Finding the Fourth Proportional to 10,978,986.70, 15,150,816.67 and 6,084,198.82

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Solution

The fourth proportional to 10,978,986.70, 15,150,816.67 and 6,084,198.82 is: 8,396,091.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,978,986.70 : 15,150,816.67 = 6,084,198.82 : x
  2. Step 2: Convert to fraction form
    10,978,986.70/15,150,816.67 = 6,084,198.82/x
  3. Step 3: Cross multiply
    10,978,986.70x = 15,150,816.67 × 6,084,198.82
  4. Step 4: Simplify right side
    10,978,986.70x = 92,180,580,799,475.25
  5. Step 5: Solve for x
    x = 92,180,580,799,475.25/10,978,986.70
  6. Step 6: Final answer
    x = 8,396,091.86

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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.