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Finding the Fourth Proportional to 122,469.37, 168,996.06 and 68,742.07

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Solution

The fourth proportional to 122,469.37, 168,996.06 and 68,742.07 is: 94,857.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,469.37 : 168,996.06 = 68,742.07 : x
  2. Step 2: Convert to fraction form
    122,469.37/168,996.06 = 68,742.07/x
  3. Step 3: Cross multiply
    122,469.37x = 168,996.06 × 68,742.07
  4. Step 4: Simplify right side
    122,469.37x = 11,617,137,797.55
  5. Step 5: Solve for x
    x = 11,617,137,797.55/122,469.37
  6. Step 6: Final answer
    x = 94,857.50

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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.