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Finding the Fourth Proportional to 8,720.25, 13,057.08 and 5,003.56

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Solution

The fourth proportional to 8,720.25, 13,057.08 and 5,003.56 is: 7,491.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.25 : 13,057.08 = 5,003.56 : x
  2. Step 2: Convert to fraction form
    8,720.25/13,057.08 = 5,003.56/x
  3. Step 3: Cross multiply
    8,720.25x = 13,057.08 × 5,003.56
  4. Step 4: Simplify right side
    8,720.25x = 65,331,883.20
  5. Step 5: Solve for x
    x = 65,331,883.20/8,720.25
  6. Step 6: Final answer
    x = 7,491.97

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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.