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Finding the Fourth Proportional to 54,379.68, 81,569.52 and 14,940.96

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Solution

The fourth proportional to 54,379.68, 81,569.52 and 14,940.96 is: 22,411.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,379.68 : 81,569.52 = 14,940.96 : x
  2. Step 2: Convert to fraction form
    54,379.68/81,569.52 = 14,940.96/x
  3. Step 3: Cross multiply
    54,379.68x = 81,569.52 × 14,940.96
  4. Step 4: Simplify right side
    54,379.68x = 1,218,726,935.54
  5. Step 5: Solve for x
    x = 1,218,726,935.54/54,379.68
  6. Step 6: Final answer
    x = 22,411.44

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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.