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Finding the Fourth Proportional to 122,131.26, 168,538.10 and 68,415.92

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Solution

The fourth proportional to 122,131.26, 168,538.10 and 68,415.92 is: 94,412.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,131.26 : 168,538.10 = 68,415.92 : x
  2. Step 2: Convert to fraction form
    122,131.26/168,538.10 = 68,415.92/x
  3. Step 3: Cross multiply
    122,131.26x = 168,538.10 × 68,415.92
  4. Step 4: Simplify right side
    122,131.26x = 11,530,689,166.55
  5. Step 5: Solve for x
    x = 11,530,689,166.55/122,131.26
  6. Step 6: Final answer
    x = 94,412.27

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.