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Finding the Fourth Proportional to 18,626.25, 27,874.92 and 11,507.56

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Solution

The fourth proportional to 18,626.25, 27,874.92 and 11,507.56 is: 17,221.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.25 : 27,874.92 = 11,507.56 : x
  2. Step 2: Convert to fraction form
    18,626.25/27,874.92 = 11,507.56/x
  3. Step 3: Cross multiply
    18,626.25x = 27,874.92 × 11,507.56
  4. Step 4: Simplify right side
    18,626.25x = 320,772,350.08
  5. Step 5: Solve for x
    x = 320,772,350.08/18,626.25
  6. Step 6: Final answer
    x = 17,221.53

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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.