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Finding the Fourth Proportional to 192,168.30, 287,863.65 and 133,070.70

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Solution

The fourth proportional to 192,168.30, 287,863.65 and 133,070.70 is: 199,336.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,168.30 : 287,863.65 = 133,070.70 : x
  2. Step 2: Convert to fraction form
    192,168.30/287,863.65 = 133,070.70/x
  3. Step 3: Cross multiply
    192,168.30x = 287,863.65 × 133,070.70
  4. Step 4: Simplify right side
    192,168.30x = 38,306,217,410.06
  5. Step 5: Solve for x
    x = 38,306,217,410.06/192,168.30
  6. Step 6: Final answer
    x = 199,336.82

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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.