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Finding the Fourth Proportional to 91,960.79, 126,906.08 and 51,674.63

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Solution

The fourth proportional to 91,960.79, 126,906.08 and 51,674.63 is: 71,311.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,960.79 : 126,906.08 = 51,674.63 : x
  2. Step 2: Convert to fraction form
    91,960.79/126,906.08 = 51,674.63/x
  3. Step 3: Cross multiply
    91,960.79x = 126,906.08 × 51,674.63
  4. Step 4: Simplify right side
    91,960.79x = 6,557,823,835.85
  5. Step 5: Solve for x
    x = 6,557,823,835.85/91,960.79
  6. Step 6: Final answer
    x = 71,311.09

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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.