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Finding the Fourth Proportional to 90,695.70, 125,194.95 and 60,469.98

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Solution

The fourth proportional to 90,695.70, 125,194.95 and 60,469.98 is: 83,471.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,695.70 : 125,194.95 = 60,469.98 : x
  2. Step 2: Convert to fraction form
    90,695.70/125,194.95 = 60,469.98/x
  3. Step 3: Cross multiply
    90,695.70x = 125,194.95 × 60,469.98
  4. Step 4: Simplify right side
    90,695.70x = 7,570,536,122.60
  5. Step 5: Solve for x
    x = 7,570,536,122.60/90,695.70
  6. Step 6: Final answer
    x = 83,471.83

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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.