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Finding the Fourth Proportional to 144,163.01, 198,944.17 and 79,636.69

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Solution

The fourth proportional to 144,163.01, 198,944.17 and 79,636.69 is: 109,898.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,163.01 : 198,944.17 = 79,636.69 : x
  2. Step 2: Convert to fraction form
    144,163.01/198,944.17 = 79,636.69/x
  3. Step 3: Cross multiply
    144,163.01x = 198,944.17 × 79,636.69
  4. Step 4: Simplify right side
    144,163.01x = 15,843,254,795.41
  5. Step 5: Solve for x
    x = 15,843,254,795.41/144,163.01
  6. Step 6: Final answer
    x = 109,898.20

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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.