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Finding the Fourth Proportional to 169,643.67, 254,390.76 and 79,711.97

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Solution

The fourth proportional to 169,643.67, 254,390.76 and 79,711.97 is: 119,532.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,643.67 : 254,390.76 = 79,711.97 : x
  2. Step 2: Convert to fraction form
    169,643.67/254,390.76 = 79,711.97/x
  3. Step 3: Cross multiply
    169,643.67x = 254,390.76 × 79,711.97
  4. Step 4: Simplify right side
    169,643.67x = 20,277,988,629.40
  5. Step 5: Solve for x
    x = 20,277,988,629.40/169,643.67
  6. Step 6: Final answer
    x = 119,532.83

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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.