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Finding the Fourth Proportional to 83,696.92, 125,490.40 and 47,674.60

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Solution

The fourth proportional to 83,696.92, 125,490.40 and 47,674.60 is: 71,480.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,696.92 : 125,490.40 = 47,674.60 : x
  2. Step 2: Convert to fraction form
    83,696.92/125,490.40 = 47,674.60/x
  3. Step 3: Cross multiply
    83,696.92x = 125,490.40 × 47,674.60
  4. Step 4: Simplify right side
    83,696.92x = 5,982,704,190.93
  5. Step 5: Solve for x
    x = 5,982,704,190.93/83,696.92
  6. Step 6: Final answer
    x = 71,480.58

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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.