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Finding the Fourth Proportional to 13,651.34, 18,840.48 and 8,346.92

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Solution

The fourth proportional to 13,651.34, 18,840.48 and 8,346.92 is: 11,519.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.34 : 18,840.48 = 8,346.92 : x
  2. Step 2: Convert to fraction form
    13,651.34/18,840.48 = 8,346.92/x
  3. Step 3: Cross multiply
    13,651.34x = 18,840.48 × 8,346.92
  4. Step 4: Simplify right side
    13,651.34x = 157,259,979.32
  5. Step 5: Solve for x
    x = 157,259,979.32/13,651.34
  6. Step 6: Final answer
    x = 11,519.75

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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.