Home / 18,873,216.71-28,309,540.60-8,491,103.84

Finding the Fourth Proportional to 18,873,216.71, 28,309,540.60 and 8,491,103.84

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Solution

The fourth proportional to 18,873,216.71, 28,309,540.60 and 8,491,103.84 is: 12,736,527.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,873,216.71 : 28,309,540.60 = 8,491,103.84 : x
  2. Step 2: Convert to fraction form
    18,873,216.71/28,309,540.60 = 8,491,103.84/x
  3. Step 3: Cross multiply
    18,873,216.71x = 28,309,540.60 × 8,491,103.84
  4. Step 4: Simplify right side
    18,873,216.71x = 240,379,248,978,683.62
  5. Step 5: Solve for x
    x = 240,379,248,978,683.62/18,873,216.71
  6. Step 6: Final answer
    x = 12,736,527.78

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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.