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Finding the Fourth Proportional to 111,269, 166,929.76 and 36,388.86

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Solution

The fourth proportional to 111,269, 166,929.76 and 36,388.86 is: 54,591.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,269 : 166,929.76 = 36,388.86 : x
  2. Step 2: Convert to fraction form
    111,269/166,929.76 = 36,388.86/x
  3. Step 3: Cross multiply
    111,269x = 166,929.76 × 36,388.86
  4. Step 4: Simplify right side
    111,269x = 6,074,383,666.47
  5. Step 5: Solve for x
    x = 6,074,383,666.47/111,269
  6. Step 6: Final answer
    x = 54,591.88

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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.