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Finding the Fourth Proportional to 18,468.56, 27,709.32 and 8,087.60

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Solution

The fourth proportional to 18,468.56, 27,709.32 and 8,087.60 is: 12,134.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,468.56 : 27,709.32 = 8,087.60 : x
  2. Step 2: Convert to fraction form
    18,468.56/27,709.32 = 8,087.60/x
  3. Step 3: Cross multiply
    18,468.56x = 27,709.32 × 8,087.60
  4. Step 4: Simplify right side
    18,468.56x = 224,101,896.43
  5. Step 5: Solve for x
    x = 224,101,896.43/18,468.56
  6. Step 6: Final answer
    x = 12,134.24

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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.