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Finding the Fourth Proportional to 43,745.76, 65,611.62 and 15,660.60

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Solution

The fourth proportional to 43,745.76, 65,611.62 and 15,660.60 is: 23,488.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,745.76 : 65,611.62 = 15,660.60 : x
  2. Step 2: Convert to fraction form
    43,745.76/65,611.62 = 15,660.60/x
  3. Step 3: Cross multiply
    43,745.76x = 65,611.62 × 15,660.60
  4. Step 4: Simplify right side
    43,745.76x = 1,027,517,336.17
  5. Step 5: Solve for x
    x = 1,027,517,336.17/43,745.76
  6. Step 6: Final answer
    x = 23,488.39

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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.