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Finding the Fourth Proportional to 139,057.56, 206,797.38 and 134,628.90

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Solution

The fourth proportional to 139,057.56, 206,797.38 and 134,628.90 is: 200,211.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,057.56 : 206,797.38 = 134,628.90 : x
  2. Step 2: Convert to fraction form
    139,057.56/206,797.38 = 134,628.90/x
  3. Step 3: Cross multiply
    139,057.56x = 206,797.38 × 134,628.90
  4. Step 4: Simplify right side
    139,057.56x = 27,840,903,792.28
  5. Step 5: Solve for x
    x = 27,840,903,792.28/139,057.56
  6. Step 6: Final answer
    x = 200,211.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.