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Finding the Fourth Proportional to 18,992.36, 28,491.24 and 5,845.82

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Solution

The fourth proportional to 18,992.36, 28,491.24 and 5,845.82 is: 8,769.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,992.36 : 28,491.24 = 5,845.82 : x
  2. Step 2: Convert to fraction form
    18,992.36/28,491.24 = 5,845.82/x
  3. Step 3: Cross multiply
    18,992.36x = 28,491.24 × 5,845.82
  4. Step 4: Simplify right side
    18,992.36x = 166,554,660.62
  5. Step 5: Solve for x
    x = 166,554,660.62/18,992.36
  6. Step 6: Final answer
    x = 8,769.56

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1.5x scale

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.