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Finding the Fourth Proportional to 12,676.80, 19,022.88 and 5,751.36

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Solution

The fourth proportional to 12,676.80, 19,022.88 and 5,751.36 is: 8,630.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,676.80 : 19,022.88 = 5,751.36 : x
  2. Step 2: Convert to fraction form
    12,676.80/19,022.88 = 5,751.36/x
  3. Step 3: Cross multiply
    12,676.80x = 19,022.88 × 5,751.36
  4. Step 4: Simplify right side
    12,676.80x = 109,407,431.12
  5. Step 5: Solve for x
    x = 109,407,431.12/12,676.80
  6. Step 6: Final answer
    x = 8,630.52

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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.