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Finding the Fourth Proportional to 136,021.70, 204,099.60 and 61,194.80

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Solution

The fourth proportional to 136,021.70, 204,099.60 and 61,194.80 is: 91,822.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,021.70 : 204,099.60 = 61,194.80 : x
  2. Step 2: Convert to fraction form
    136,021.70/204,099.60 = 61,194.80/x
  3. Step 3: Cross multiply
    136,021.70x = 204,099.60 × 61,194.80
  4. Step 4: Simplify right side
    136,021.70x = 12,489,834,202.08
  5. Step 5: Solve for x
    x = 12,489,834,202.08/136,021.70
  6. Step 6: Final answer
    x = 91,822.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.