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Finding the Fourth Proportional to 111,007.70, 166,538.87 and 32,129.90

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Solution

The fourth proportional to 111,007.70, 166,538.87 and 32,129.90 is: 48,202.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,007.70 : 166,538.87 = 32,129.90 : x
  2. Step 2: Convert to fraction form
    111,007.70/166,538.87 = 32,129.90/x
  3. Step 3: Cross multiply
    111,007.70x = 166,538.87 × 32,129.90
  4. Step 4: Simplify right side
    111,007.70x = 5,350,877,239.21
  5. Step 5: Solve for x
    x = 5,350,877,239.21/111,007.70
  6. Step 6: Final answer
    x = 48,202.76

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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.