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Finding the Fourth Proportional to 111,270.76, 166,906.46 and 28,164.68

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Solution

The fourth proportional to 111,270.76, 166,906.46 and 28,164.68 is: 42,247.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,270.76 : 166,906.46 = 28,164.68 : x
  2. Step 2: Convert to fraction form
    111,270.76/166,906.46 = 28,164.68/x
  3. Step 3: Cross multiply
    111,270.76x = 166,906.46 × 28,164.68
  4. Step 4: Simplify right side
    111,270.76x = 4,700,867,035.83
  5. Step 5: Solve for x
    x = 4,700,867,035.83/111,270.76
  6. Step 6: Final answer
    x = 42,247.10

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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.