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Finding the Fourth Proportional to 13,505.40, 20,233.80 and 11,950.20

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Solution

The fourth proportional to 13,505.40, 20,233.80 and 11,950.20 is: 17,903.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,505.40 : 20,233.80 = 11,950.20 : x
  2. Step 2: Convert to fraction form
    13,505.40/20,233.80 = 11,950.20/x
  3. Step 3: Cross multiply
    13,505.40x = 20,233.80 × 11,950.20
  4. Step 4: Simplify right side
    13,505.40x = 241,797,956.76
  5. Step 5: Solve for x
    x = 241,797,956.76/13,505.40
  6. Step 6: Final answer
    x = 17,903.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.