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Finding the Fourth Proportional to 18,759.25, 28,091.24 and 11,258.08

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Solution

The fourth proportional to 18,759.25, 28,091.24 and 11,258.08 is: 16,858.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759.25 : 28,091.24 = 11,258.08 : x
  2. Step 2: Convert to fraction form
    18,759.25/28,091.24 = 11,258.08/x
  3. Step 3: Cross multiply
    18,759.25x = 28,091.24 × 11,258.08
  4. Step 4: Simplify right side
    18,759.25x = 316,253,469.30
  5. Step 5: Solve for x
    x = 316,253,469.30/18,759.25
  6. Step 6: Final answer
    x = 16,858.54

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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.