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Finding the Fourth Proportional to 192,409.30, 288,613.95 and 156,979.90

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Solution

The fourth proportional to 192,409.30, 288,613.95 and 156,979.90 is: 235,469.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,409.30 : 288,613.95 = 156,979.90 : x
  2. Step 2: Convert to fraction form
    192,409.30/288,613.95 = 156,979.90/x
  3. Step 3: Cross multiply
    192,409.30x = 288,613.95 × 156,979.90
  4. Step 4: Simplify right side
    192,409.30x = 45,306,589,009.61
  5. Step 5: Solve for x
    x = 45,306,589,009.61/192,409.30
  6. Step 6: Final answer
    x = 235,469.85

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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.