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Finding the Fourth Proportional to 140,613.92, 194,046.90 and 76,951.68

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Solution

The fourth proportional to 140,613.92, 194,046.90 and 76,951.68 is: 106,193.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,613.92 : 194,046.90 = 76,951.68 : x
  2. Step 2: Convert to fraction form
    140,613.92/194,046.90 = 76,951.68/x
  3. Step 3: Cross multiply
    140,613.92x = 194,046.90 × 76,951.68
  4. Step 4: Simplify right side
    140,613.92x = 14,932,234,953.79
  5. Step 5: Solve for x
    x = 14,932,234,953.79/140,613.92
  6. Step 6: Final answer
    x = 106,193.15

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1.5x scale

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.