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Finding the Fourth Proportional to 139,847.36, 192,989.76 and 83,258.24

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Solution

The fourth proportional to 139,847.36, 192,989.76 and 83,258.24 is: 114,896.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,847.36 : 192,989.76 = 83,258.24 : x
  2. Step 2: Convert to fraction form
    139,847.36/192,989.76 = 83,258.24/x
  3. Step 3: Cross multiply
    139,847.36x = 192,989.76 × 83,258.24
  4. Step 4: Simplify right side
    139,847.36x = 16,067,987,755.62
  5. Step 5: Solve for x
    x = 16,067,987,755.62/139,847.36
  6. Step 6: Final answer
    x = 114,896.61

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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.