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Finding the Fourth Proportional to 57,889.98, 86,785.74 and 55,134.36

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Solution

The fourth proportional to 57,889.98, 86,785.74 and 55,134.36 is: 82,654.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,889.98 : 86,785.74 = 55,134.36 : x
  2. Step 2: Convert to fraction form
    57,889.98/86,785.74 = 55,134.36/x
  3. Step 3: Cross multiply
    57,889.98x = 86,785.74 × 55,134.36
  4. Step 4: Simplify right side
    57,889.98x = 4,784,876,232.03
  5. Step 5: Solve for x
    x = 4,784,876,232.03/57,889.98
  6. Step 6: Final answer
    x = 82,654.65

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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.