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Finding the Fourth Proportional to 18,791.52, 25,939.64 and 10,840.56

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Solution

The fourth proportional to 18,791.52, 25,939.64 and 10,840.56 is: 14,964.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.52 : 25,939.64 = 10,840.56 : x
  2. Step 2: Convert to fraction form
    18,791.52/25,939.64 = 10,840.56/x
  3. Step 3: Cross multiply
    18,791.52x = 25,939.64 × 10,840.56
  4. Step 4: Simplify right side
    18,791.52x = 281,200,223.80
  5. Step 5: Solve for x
    x = 281,200,223.80/18,791.52
  6. Step 6: Final answer
    x = 14,964.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.