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Finding the Fourth Proportional to 19,157.81, 26,433.81 and 11,198.49

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Solution

The fourth proportional to 19,157.81, 26,433.81 and 11,198.49 is: 15,451.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,157.81 : 26,433.81 = 11,198.49 : x
  2. Step 2: Convert to fraction form
    19,157.81/26,433.81 = 11,198.49/x
  3. Step 3: Cross multiply
    19,157.81x = 26,433.81 × 11,198.49
  4. Step 4: Simplify right side
    19,157.81x = 296,018,742.95
  5. Step 5: Solve for x
    x = 296,018,742.95/19,157.81
  6. Step 6: Final answer
    x = 15,451.60

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