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Finding the Fourth Proportional to 54,808.80, 82,213.20 and 48,685.20

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Solution

The fourth proportional to 54,808.80, 82,213.20 and 48,685.20 is: 73,027.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,808.80 : 82,213.20 = 48,685.20 : x
  2. Step 2: Convert to fraction form
    54,808.80/82,213.20 = 48,685.20/x
  3. Step 3: Cross multiply
    54,808.80x = 82,213.20 × 48,685.20
  4. Step 4: Simplify right side
    54,808.80x = 4,002,566,084.64
  5. Step 5: Solve for x
    x = 4,002,566,084.64/54,808.80
  6. Step 6: Final answer
    x = 73,027.80

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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.