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Finding the Fourth Proportional to 16,611.76, 24,921.68 and 4,765.76

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Solution

The fourth proportional to 16,611.76, 24,921.68 and 4,765.76 is: 7,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,611.76 : 24,921.68 = 4,765.76 : x
  2. Step 2: Convert to fraction form
    16,611.76/24,921.68 = 4,765.76/x
  3. Step 3: Cross multiply
    16,611.76x = 24,921.68 × 4,765.76
  4. Step 4: Simplify right side
    16,611.76x = 118,770,745.68
  5. Step 5: Solve for x
    x = 118,770,745.68/16,611.76
  6. Step 6: Final answer
    x = 7,149.80

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1.5x scale

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.