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Finding the Fourth Proportional to 13,453.64, 18,558.44 and 8,074.64

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Solution

The fourth proportional to 13,453.64, 18,558.44 and 8,074.64 is: 11,138.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,453.64 : 18,558.44 = 8,074.64 : x
  2. Step 2: Convert to fraction form
    13,453.64/18,558.44 = 8,074.64/x
  3. Step 3: Cross multiply
    13,453.64x = 18,558.44 × 8,074.64
  4. Step 4: Simplify right side
    13,453.64x = 149,852,721.96
  5. Step 5: Solve for x
    x = 149,852,721.96/13,453.64
  6. Step 6: Final answer
    x = 11,138.45

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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.