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Finding the Fourth Proportional to 11,043.59, 15,245.78 and 8,520.03

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Solution

The fourth proportional to 11,043.59, 15,245.78 and 8,520.03 is: 11,761.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,043.59 : 15,245.78 = 8,520.03 : x
  2. Step 2: Convert to fraction form
    11,043.59/15,245.78 = 8,520.03/x
  3. Step 3: Cross multiply
    11,043.59x = 15,245.78 × 8,520.03
  4. Step 4: Simplify right side
    11,043.59x = 129,894,460.37
  5. Step 5: Solve for x
    x = 129,894,460.37/11,043.59
  6. Step 6: Final answer
    x = 11,761.98

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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.