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Finding the Fourth Proportional to 54,620.80, 81,916.62 and 33,691.30

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Solution

The fourth proportional to 54,620.80, 81,916.62 and 33,691.30 is: 50,527.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,620.80 : 81,916.62 = 33,691.30 : x
  2. Step 2: Convert to fraction form
    54,620.80/81,916.62 = 33,691.30/x
  3. Step 3: Cross multiply
    54,620.80x = 81,916.62 × 33,691.30
  4. Step 4: Simplify right side
    54,620.80x = 2,759,877,419.41
  5. Step 5: Solve for x
    x = 2,759,877,419.41/54,620.80
  6. Step 6: Final answer
    x = 50,527.96

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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.