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Finding the Fourth Proportional to 57,236.80, 85,855.20 and 54,011.20

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Solution

The fourth proportional to 57,236.80, 85,855.20 and 54,011.20 is: 81,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,236.80 : 85,855.20 = 54,011.20 : x
  2. Step 2: Convert to fraction form
    57,236.80/85,855.20 = 54,011.20/x
  3. Step 3: Cross multiply
    57,236.80x = 85,855.20 × 54,011.20
  4. Step 4: Simplify right side
    57,236.80x = 4,637,142,378.24
  5. Step 5: Solve for x
    x = 4,637,142,378.24/57,236.80
  6. Step 6: Final answer
    x = 81,016.80

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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.