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Finding the Fourth Proportional to 111,279.67, 166,919.71 and 27,039.90

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Solution

The fourth proportional to 111,279.67, 166,919.71 and 27,039.90 is: 40,559.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,279.67 : 166,919.71 = 27,039.90 : x
  2. Step 2: Convert to fraction form
    111,279.67/166,919.71 = 27,039.90/x
  3. Step 3: Cross multiply
    111,279.67x = 166,919.71 × 27,039.90
  4. Step 4: Simplify right side
    111,279.67x = 4,513,492,266.43
  5. Step 5: Solve for x
    x = 4,513,492,266.43/111,279.67
  6. Step 6: Final answer
    x = 40,559.90

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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.