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Finding the Fourth Proportional to 59,910.80, 89,693.40 and 40,211.60

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Solution

The fourth proportional to 59,910.80, 89,693.40 and 40,211.60 is: 60,201.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,910.80 : 89,693.40 = 40,211.60 : x
  2. Step 2: Convert to fraction form
    59,910.80/89,693.40 = 40,211.60/x
  3. Step 3: Cross multiply
    59,910.80x = 89,693.40 × 40,211.60
  4. Step 4: Simplify right side
    59,910.80x = 3,606,715,123.44
  5. Step 5: Solve for x
    x = 3,606,715,123.44/59,910.80
  6. Step 6: Final answer
    x = 60,201.42

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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.