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Finding the Fourth Proportional to 26,872.52, 40,289.52 and 12,633.02

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Solution

The fourth proportional to 26,872.52, 40,289.52 and 12,633.02 is: 18,940.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,872.52 : 40,289.52 = 12,633.02 : x
  2. Step 2: Convert to fraction form
    26,872.52/40,289.52 = 12,633.02/x
  3. Step 3: Cross multiply
    26,872.52x = 40,289.52 × 12,633.02
  4. Step 4: Simplify right side
    26,872.52x = 508,978,311.95
  5. Step 5: Solve for x
    x = 508,978,311.95/26,872.52
  6. Step 6: Final answer
    x = 18,940.48

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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.