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Finding the Fourth Proportional to 111,269.76, 166,904.96 and 28,163.68

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Solution

The fourth proportional to 111,269.76, 166,904.96 and 28,163.68 is: 42,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,269.76 : 166,904.96 = 28,163.68 : x
  2. Step 2: Convert to fraction form
    111,269.76/166,904.96 = 28,163.68/x
  3. Step 3: Cross multiply
    111,269.76x = 166,904.96 × 28,163.68
  4. Step 4: Simplify right side
    111,269.76x = 4,700,657,883.85
  5. Step 5: Solve for x
    x = 4,700,657,883.85/111,269.76
  6. Step 6: Final answer
    x = 42,245.60

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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.