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Finding the Fourth Proportional to 28,438.44, 39,249.84 and 16,511.76

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Solution

The fourth proportional to 28,438.44, 39,249.84 and 16,511.76 is: 22,789.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,438.44 : 39,249.84 = 16,511.76 : x
  2. Step 2: Convert to fraction form
    28,438.44/39,249.84 = 16,511.76/x
  3. Step 3: Cross multiply
    28,438.44x = 39,249.84 × 16,511.76
  4. Step 4: Simplify right side
    28,438.44x = 648,083,938.12
  5. Step 5: Solve for x
    x = 648,083,938.12/28,438.44
  6. Step 6: Final answer
    x = 22,789.01

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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.