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Finding the Fourth Proportional to 19,618.53, 29,384.73 and 18,082.15

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Solution

The fourth proportional to 19,618.53, 29,384.73 and 18,082.15 is: 27,083.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,618.53 : 29,384.73 = 18,082.15 : x
  2. Step 2: Convert to fraction form
    19,618.53/29,384.73 = 18,082.15/x
  3. Step 3: Cross multiply
    19,618.53x = 29,384.73 × 18,082.15
  4. Step 4: Simplify right side
    19,618.53x = 531,339,095.57
  5. Step 5: Solve for x
    x = 531,339,095.57/19,618.53
  6. Step 6: Final answer
    x = 27,083.53

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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.