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Finding the Fourth Proportional to 198,192.55, 297,334.23 and 85,891.62

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Solution

The fourth proportional to 198,192.55, 297,334.23 and 85,891.62 is: 128,857.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,192.55 : 297,334.23 = 85,891.62 : x
  2. Step 2: Convert to fraction form
    198,192.55/297,334.23 = 85,891.62/x
  3. Step 3: Cross multiply
    198,192.55x = 297,334.23 × 85,891.62
  4. Step 4: Simplify right side
    198,192.55x = 25,538,518,696.15
  5. Step 5: Solve for x
    x = 25,538,518,696.15/198,192.55
  6. Step 6: Final answer
    x = 128,857.11

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1.5x scale

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.