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Finding the Fourth Proportional to 67,115.66, 100,719.69 and 27,672.77

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Solution

The fourth proportional to 67,115.66, 100,719.69 and 27,672.77 is: 41,528.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,115.66 : 100,719.69 = 27,672.77 : x
  2. Step 2: Convert to fraction form
    67,115.66/100,719.69 = 27,672.77/x
  3. Step 3: Cross multiply
    67,115.66x = 100,719.69 × 27,672.77
  4. Step 4: Simplify right side
    67,115.66x = 2,787,192,312.24
  5. Step 5: Solve for x
    x = 2,787,192,312.24/67,115.66
  6. Step 6: Final answer
    x = 41,528.20

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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.