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Finding the Fourth Proportional to 111,123.74, 166,668.68 and 36,243.77

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Solution

The fourth proportional to 111,123.74, 166,668.68 and 36,243.77 is: 54,360.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,123.74 : 166,668.68 = 36,243.77 : x
  2. Step 2: Convert to fraction form
    111,123.74/166,668.68 = 36,243.77/x
  3. Step 3: Cross multiply
    111,123.74x = 166,668.68 × 36,243.77
  4. Step 4: Simplify right side
    111,123.74x = 6,040,701,811.40
  5. Step 5: Solve for x
    x = 6,040,701,811.40/111,123.74
  6. Step 6: Final answer
    x = 54,360.14

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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.