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Finding the Fourth Proportional to 18,023.24, 27,027.34 and 8,661.06

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Solution

The fourth proportional to 18,023.24, 27,027.34 and 8,661.06 is: 12,987.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,023.24 : 27,027.34 = 8,661.06 : x
  2. Step 2: Convert to fraction form
    18,023.24/27,027.34 = 8,661.06/x
  3. Step 3: Cross multiply
    18,023.24x = 27,027.34 × 8,661.06
  4. Step 4: Simplify right side
    18,023.24x = 234,085,391.73
  5. Step 5: Solve for x
    x = 234,085,391.73/18,023.24
  6. Step 6: Final answer
    x = 12,987.97

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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.