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Finding the Fourth Proportional to 18,993.22, 28,493.62 and 5,845.10

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Solution

The fourth proportional to 18,993.22, 28,493.62 and 5,845.10 is: 8,768.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,993.22 : 28,493.62 = 5,845.10 : x
  2. Step 2: Convert to fraction form
    18,993.22/28,493.62 = 5,845.10/x
  3. Step 3: Cross multiply
    18,993.22x = 28,493.62 × 5,845.10
  4. Step 4: Simplify right side
    18,993.22x = 166,548,058.26
  5. Step 5: Solve for x
    x = 166,548,058.26/18,993.22
  6. Step 6: Final answer
    x = 8,768.82

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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.