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Finding the Fourth Proportional to 13,445.88, 18,557.26 and 8,068.56

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Solution

The fourth proportional to 13,445.88, 18,557.26 and 8,068.56 is: 11,135.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.88 : 18,557.26 = 8,068.56 : x
  2. Step 2: Convert to fraction form
    13,445.88/18,557.26 = 8,068.56/x
  3. Step 3: Cross multiply
    13,445.88x = 18,557.26 × 8,068.56
  4. Step 4: Simplify right side
    13,445.88x = 149,730,365.75
  5. Step 5: Solve for x
    x = 149,730,365.75/13,445.88
  6. Step 6: Final answer
    x = 11,135.78

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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.