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Finding the Fourth Proportional to 122,496.01, 169,052.85 and 68,054.56

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Solution

The fourth proportional to 122,496.01, 169,052.85 and 68,054.56 is: 93,919.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,496.01 : 169,052.85 = 68,054.56 : x
  2. Step 2: Convert to fraction form
    122,496.01/169,052.85 = 68,054.56/x
  3. Step 3: Cross multiply
    122,496.01x = 169,052.85 × 68,054.56
  4. Step 4: Simplify right side
    122,496.01x = 11,504,817,323.50
  5. Step 5: Solve for x
    x = 11,504,817,323.50/122,496.01
  6. Step 6: Final answer
    x = 93,919.94

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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.