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Finding the Fourth Proportional to 140,487.77, 193,874.15 and 79,234.76

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Solution

The fourth proportional to 140,487.77, 193,874.15 and 79,234.76 is: 109,344.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,487.77 : 193,874.15 = 79,234.76 : x
  2. Step 2: Convert to fraction form
    140,487.77/193,874.15 = 79,234.76/x
  3. Step 3: Cross multiply
    140,487.77x = 193,874.15 × 79,234.76
  4. Step 4: Simplify right side
    140,487.77x = 15,361,571,745.45
  5. Step 5: Solve for x
    x = 15,361,571,745.45/140,487.77
  6. Step 6: Final answer
    x = 109,344.55

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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.