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Finding the Fourth Proportional to 111,269.88, 166,931.07 and 36,389.73

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Solution

The fourth proportional to 111,269.88, 166,931.07 and 36,389.73 is: 54,593.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,269.88 : 166,931.07 = 36,389.73 : x
  2. Step 2: Convert to fraction form
    111,269.88/166,931.07 = 36,389.73/x
  3. Step 3: Cross multiply
    111,269.88x = 166,931.07 × 36,389.73
  4. Step 4: Simplify right side
    111,269.88x = 6,074,576,565.91
  5. Step 5: Solve for x
    x = 6,074,576,565.91/111,269.88
  6. Step 6: Final answer
    x = 54,593.18

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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.