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Finding the Fourth Proportional to 91,086.40, 136,629.60 and 27,906.40

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Solution

The fourth proportional to 91,086.40, 136,629.60 and 27,906.40 is: 41,859.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,086.40 : 136,629.60 = 27,906.40 : x
  2. Step 2: Convert to fraction form
    91,086.40/136,629.60 = 27,906.40/x
  3. Step 3: Cross multiply
    91,086.40x = 136,629.60 × 27,906.40
  4. Step 4: Simplify right side
    91,086.40x = 3,812,840,269.44
  5. Step 5: Solve for x
    x = 3,812,840,269.44/91,086.40
  6. Step 6: Final answer
    x = 41,859.60

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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.