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Finding the Fourth Proportional to 18,993.72, 28,494.36 and 5,845.59

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Solution

The fourth proportional to 18,993.72, 28,494.36 and 5,845.59 is: 8,769.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,993.72 : 28,494.36 = 5,845.59 : x
  2. Step 2: Convert to fraction form
    18,993.72/28,494.36 = 5,845.59/x
  3. Step 3: Cross multiply
    18,993.72x = 28,494.36 × 5,845.59
  4. Step 4: Simplify right side
    18,993.72x = 166,566,345.87
  5. Step 5: Solve for x
    x = 166,566,345.87/18,993.72
  6. Step 6: Final answer
    x = 8,769.55

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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.