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Finding the Fourth Proportional to 13,447.99, 20,150.90 and 8,507.19

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Solution

The fourth proportional to 13,447.99, 20,150.90 and 8,507.19 is: 12,747.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.99 : 20,150.90 = 8,507.19 : x
  2. Step 2: Convert to fraction form
    13,447.99/20,150.90 = 8,507.19/x
  3. Step 3: Cross multiply
    13,447.99x = 20,150.90 × 8,507.19
  4. Step 4: Simplify right side
    13,447.99x = 171,427,434.22
  5. Step 5: Solve for x
    x = 171,427,434.22/13,447.99
  6. Step 6: Final answer
    x = 12,747.44

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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.