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Finding the Fourth Proportional to 123,847.60, 170,906.88 and 67,257.76

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Solution

The fourth proportional to 123,847.60, 170,906.88 and 67,257.76 is: 92,814.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,847.60 : 170,906.88 = 67,257.76 : x
  2. Step 2: Convert to fraction form
    123,847.60/170,906.88 = 67,257.76/x
  3. Step 3: Cross multiply
    123,847.60x = 170,906.88 × 67,257.76
  4. Step 4: Simplify right side
    123,847.60x = 11,494,813,917.39
  5. Step 5: Solve for x
    x = 11,494,813,917.39/123,847.60
  6. Step 6: Final answer
    x = 92,814.18

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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.