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Finding the Fourth Proportional to 56,679.60, 85,105.80 and 33,351.60

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Solution

The fourth proportional to 56,679.60, 85,105.80 and 33,351.60 is: 50,078.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,679.60 : 85,105.80 = 33,351.60 : x
  2. Step 2: Convert to fraction form
    56,679.60/85,105.80 = 33,351.60/x
  3. Step 3: Cross multiply
    56,679.60x = 85,105.80 × 33,351.60
  4. Step 4: Simplify right side
    56,679.60x = 2,838,414,599.28
  5. Step 5: Solve for x
    x = 2,838,414,599.28/56,679.60
  6. Step 6: Final answer
    x = 50,078.24

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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.