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Finding the Fourth Proportional to 13,730.66, 20,546.78 and 11,888.13

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Solution

The fourth proportional to 13,730.66, 20,546.78 and 11,888.13 is: 17,789.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.66 : 20,546.78 = 11,888.13 : x
  2. Step 2: Convert to fraction form
    13,730.66/20,546.78 = 11,888.13/x
  3. Step 3: Cross multiply
    13,730.66x = 20,546.78 × 11,888.13
  4. Step 4: Simplify right side
    13,730.66x = 244,262,732.28
  5. Step 5: Solve for x
    x = 244,262,732.28/13,730.66
  6. Step 6: Final answer
    x = 17,789.59

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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.