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Finding the Fourth Proportional to 54,082.54, 81,123.69 and 14,640.70

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Solution

The fourth proportional to 54,082.54, 81,123.69 and 14,640.70 is: 21,961.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,082.54 : 81,123.69 = 14,640.70 : x
  2. Step 2: Convert to fraction form
    54,082.54/81,123.69 = 14,640.70/x
  3. Step 3: Cross multiply
    54,082.54x = 81,123.69 × 14,640.70
  4. Step 4: Simplify right side
    54,082.54x = 1,187,707,608.18
  5. Step 5: Solve for x
    x = 1,187,707,608.18/54,082.54
  6. Step 6: Final answer
    x = 21,961.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.