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Finding the Fourth Proportional to 125,679.39, 173,440.50 and 68,321.97

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Solution

The fourth proportional to 125,679.39, 173,440.50 and 68,321.97 is: 94,285.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,679.39 : 173,440.50 = 68,321.97 : x
  2. Step 2: Convert to fraction form
    125,679.39/173,440.50 = 68,321.97/x
  3. Step 3: Cross multiply
    125,679.39x = 173,440.50 × 68,321.97
  4. Step 4: Simplify right side
    125,679.39x = 11,849,796,637.79
  5. Step 5: Solve for x
    x = 11,849,796,637.79/125,679.39
  6. Step 6: Final answer
    x = 94,285.92

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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.