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Finding the Fourth Proportional to 18,197.90, 25,114.25 and 11,028.44

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Solution

The fourth proportional to 18,197.90, 25,114.25 and 11,028.44 is: 15,219.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,197.90 : 25,114.25 = 11,028.44 : x
  2. Step 2: Convert to fraction form
    18,197.90/25,114.25 = 11,028.44/x
  3. Step 3: Cross multiply
    18,197.90x = 25,114.25 × 11,028.44
  4. Step 4: Simplify right side
    18,197.90x = 276,970,944.13
  5. Step 5: Solve for x
    x = 276,970,944.13/18,197.90
  6. Step 6: Final answer
    x = 15,219.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.