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Finding the Fourth Proportional to 123,959.64, 171,057.36 and 67,370.64

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Solution

The fourth proportional to 123,959.64, 171,057.36 and 67,370.64 is: 92,967.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,959.64 : 171,057.36 = 67,370.64 : x
  2. Step 2: Convert to fraction form
    123,959.64/171,057.36 = 67,370.64/x
  3. Step 3: Cross multiply
    123,959.64x = 171,057.36 × 67,370.64
  4. Step 4: Simplify right side
    123,959.64x = 11,524,243,819.91
  5. Step 5: Solve for x
    x = 11,524,243,819.91/123,959.64
  6. Step 6: Final answer
    x = 92,967.71

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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.