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Finding the Fourth Proportional to 18,859.93, 26,015.17 and 11,198.01

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Solution

The fourth proportional to 18,859.93, 26,015.17 and 11,198.01 is: 15,446.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,859.93 : 26,015.17 = 11,198.01 : x
  2. Step 2: Convert to fraction form
    18,859.93/26,015.17 = 11,198.01/x
  3. Step 3: Cross multiply
    18,859.93x = 26,015.17 × 11,198.01
  4. Step 4: Simplify right side
    18,859.93x = 291,318,212.50
  5. Step 5: Solve for x
    x = 291,318,212.50/18,859.93
  6. Step 6: Final answer
    x = 15,446.41

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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.