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Finding the Fourth Proportional to 198,672.60, 274,166.70 and 108,028.46

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Solution

The fourth proportional to 198,672.60, 274,166.70 and 108,028.46 is: 149,078.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,672.60 : 274,166.70 = 108,028.46 : x
  2. Step 2: Convert to fraction form
    198,672.60/274,166.70 = 108,028.46/x
  3. Step 3: Cross multiply
    198,672.60x = 274,166.70 × 108,028.46
  4. Step 4: Simplify right side
    198,672.60x = 29,617,806,384.28
  5. Step 5: Solve for x
    x = 29,617,806,384.28/198,672.60
  6. Step 6: Final answer
    x = 149,078.47

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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.