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Finding the Fourth Proportional to 18,622.74, 25,695.18 and 11,074.62

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Solution

The fourth proportional to 18,622.74, 25,695.18 and 11,074.62 is: 15,280.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,622.74 : 25,695.18 = 11,074.62 : x
  2. Step 2: Convert to fraction form
    18,622.74/25,695.18 = 11,074.62/x
  3. Step 3: Cross multiply
    18,622.74x = 25,695.18 × 11,074.62
  4. Step 4: Simplify right side
    18,622.74x = 284,564,354.33
  5. Step 5: Solve for x
    x = 284,564,354.33/18,622.74
  6. Step 6: Final answer
    x = 15,280.48

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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.