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Finding the Fourth Proportional to 26,964.20, 40,431.90 and 11,364.20

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Solution

The fourth proportional to 26,964.20, 40,431.90 and 11,364.20 is: 17,040.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,964.20 : 40,431.90 = 11,364.20 : x
  2. Step 2: Convert to fraction form
    26,964.20/40,431.90 = 11,364.20/x
  3. Step 3: Cross multiply
    26,964.20x = 40,431.90 × 11,364.20
  4. Step 4: Simplify right side
    26,964.20x = 459,476,197.98
  5. Step 5: Solve for x
    x = 459,476,197.98/26,964.20
  6. Step 6: Final answer
    x = 17,040.23

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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.