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Finding the Fourth Proportional to 54,537.80, 81,806.70 and 48,414.20

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Solution

The fourth proportional to 54,537.80, 81,806.70 and 48,414.20 is: 72,621.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,537.80 : 81,806.70 = 48,414.20 : x
  2. Step 2: Convert to fraction form
    54,537.80/81,806.70 = 48,414.20/x
  3. Step 3: Cross multiply
    54,537.80x = 81,806.70 × 48,414.20
  4. Step 4: Simplify right side
    54,537.80x = 3,960,605,935.14
  5. Step 5: Solve for x
    x = 3,960,605,935.14/54,537.80
  6. Step 6: Final answer
    x = 72,621.30

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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.