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Finding the Fourth Proportional to 123,648.40, 170,634.99 and 67,059.82

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Solution

The fourth proportional to 123,648.40, 170,634.99 and 67,059.82 is: 92,542.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,648.40 : 170,634.99 = 67,059.82 : x
  2. Step 2: Convert to fraction form
    123,648.40/170,634.99 = 67,059.82/x
  3. Step 3: Cross multiply
    123,648.40x = 170,634.99 × 67,059.82
  4. Step 4: Simplify right side
    123,648.40x = 11,442,751,715.10
  5. Step 5: Solve for x
    x = 11,442,751,715.10/123,648.40
  6. Step 6: Final answer
    x = 92,542.66

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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.