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Finding the Fourth Proportional to 18,573.76, 27,867.75 and 11,183.50

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Solution

The fourth proportional to 18,573.76, 27,867.75 and 11,183.50 is: 16,779.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,573.76 : 27,867.75 = 11,183.50 : x
  2. Step 2: Convert to fraction form
    18,573.76/27,867.75 = 11,183.50/x
  3. Step 3: Cross multiply
    18,573.76x = 27,867.75 × 11,183.50
  4. Step 4: Simplify right side
    18,573.76x = 311,658,982.13
  5. Step 5: Solve for x
    x = 311,658,982.13/18,573.76
  6. Step 6: Final answer
    x = 16,779.53

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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.