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Finding the Fourth Proportional to 11,932.88, 17,779.40 and 11,262.20

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Solution

The fourth proportional to 11,932.88, 17,779.40 and 11,262.20 is: 16,780.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,932.88 : 17,779.40 = 11,262.20 : x
  2. Step 2: Convert to fraction form
    11,932.88/17,779.40 = 11,262.20/x
  3. Step 3: Cross multiply
    11,932.88x = 17,779.40 × 11,262.20
  4. Step 4: Simplify right side
    11,932.88x = 200,235,013.47
  5. Step 5: Solve for x
    x = 200,235,013.47/11,932.88
  6. Step 6: Final answer
    x = 16,780.11

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.