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Finding the Fourth Proportional to 123,855.27, 170,919.30 and 67,266.64

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Solution

The fourth proportional to 123,855.27, 170,919.30 and 67,266.64 is: 92,827.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,855.27 : 170,919.30 = 67,266.64 : x
  2. Step 2: Convert to fraction form
    123,855.27/170,919.30 = 67,266.64/x
  3. Step 3: Cross multiply
    123,855.27x = 170,919.30 × 67,266.64
  4. Step 4: Simplify right side
    123,855.27x = 11,497,167,022.15
  5. Step 5: Solve for x
    x = 11,497,167,022.15/123,855.27
  6. Step 6: Final answer
    x = 92,827.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.