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Finding the Fourth Proportional to 18,163.58, 27,255.91 and 7,632.77

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Solution

The fourth proportional to 18,163.58, 27,255.91 and 7,632.77 is: 11,453.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,163.58 : 27,255.91 = 7,632.77 : x
  2. Step 2: Convert to fraction form
    18,163.58/27,255.91 = 7,632.77/x
  3. Step 3: Cross multiply
    18,163.58x = 27,255.91 × 7,632.77
  4. Step 4: Simplify right side
    18,163.58x = 208,038,122.15
  5. Step 5: Solve for x
    x = 208,038,122.15/18,163.58
  6. Step 6: Final answer
    x = 11,453.58

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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.