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Finding the Fourth Proportional to 28,791.16, 43,186.90 and 8,014.68

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Solution

The fourth proportional to 28,791.16, 43,186.90 and 8,014.68 is: 12,022.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,791.16 : 43,186.90 = 8,014.68 : x
  2. Step 2: Convert to fraction form
    28,791.16/43,186.90 = 8,014.68/x
  3. Step 3: Cross multiply
    28,791.16x = 43,186.90 × 8,014.68
  4. Step 4: Simplify right side
    28,791.16x = 346,129,183.69
  5. Step 5: Solve for x
    x = 346,129,183.69/28,791.16
  6. Step 6: Final answer
    x = 12,022.06

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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.