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Finding the Fourth Proportional to 144,073.01, 198,823.94 and 79,542.05

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Solution

The fourth proportional to 144,073.01, 198,823.94 and 79,542.05 is: 109,769.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,073.01 : 198,823.94 = 79,542.05 : x
  2. Step 2: Convert to fraction form
    144,073.01/198,823.94 = 79,542.05/x
  3. Step 3: Cross multiply
    144,073.01x = 198,823.94 × 79,542.05
  4. Step 4: Simplify right side
    144,073.01x = 15,814,863,776.68
  5. Step 5: Solve for x
    x = 15,814,863,776.68/144,073.01
  6. Step 6: Final answer
    x = 109,769.79

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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.