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Finding the Fourth Proportional to 6,661,676.37, 9,991,019.90 and 3,063,986.85

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Solution

The fourth proportional to 6,661,676.37, 9,991,019.90 and 3,063,986.85 is: 4,595,292.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,661,676.37 : 9,991,019.90 = 3,063,986.85 : x
  2. Step 2: Convert to fraction form
    6,661,676.37/9,991,019.90 = 3,063,986.85/x
  3. Step 3: Cross multiply
    6,661,676.37x = 9,991,019.90 × 3,063,986.85
  4. Step 4: Simplify right side
    6,661,676.37x = 30,612,353,571,997.66
  5. Step 5: Solve for x
    x = 30,612,353,571,997.66/6,661,676.37
  6. Step 6: Final answer
    x = 4,595,292.82

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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.