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Finding the Fourth Proportional to 18,105.10, 27,157.67 and 4,957.58

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Solution

The fourth proportional to 18,105.10, 27,157.67 and 4,957.58 is: 7,436.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.10 : 27,157.67 = 4,957.58 : x
  2. Step 2: Convert to fraction form
    18,105.10/27,157.67 = 4,957.58/x
  3. Step 3: Cross multiply
    18,105.10x = 27,157.67 × 4,957.58
  4. Step 4: Simplify right side
    18,105.10x = 134,636,321.64
  5. Step 5: Solve for x
    x = 134,636,321.64/18,105.10
  6. Step 6: Final answer
    x = 7,436.38

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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.