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Finding the Fourth Proportional to 122,608.16, 169,198.70 and 68,159.96

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Solution

The fourth proportional to 122,608.16, 169,198.70 and 68,159.96 is: 94,060.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,608.16 : 169,198.70 = 68,159.96 : x
  2. Step 2: Convert to fraction form
    122,608.16/169,198.70 = 68,159.96/x
  3. Step 3: Cross multiply
    122,608.16x = 169,198.70 × 68,159.96
  4. Step 4: Simplify right side
    122,608.16x = 11,532,576,624.05
  5. Step 5: Solve for x
    x = 11,532,576,624.05/122,608.16
  6. Step 6: Final answer
    x = 94,060.43

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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.