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Finding the Fourth Proportional to 92,906.70, 128,209.14 and 50,464.32

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Solution

The fourth proportional to 92,906.70, 128,209.14 and 50,464.32 is: 69,639.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,906.70 : 128,209.14 = 50,464.32 : x
  2. Step 2: Convert to fraction form
    92,906.70/128,209.14 = 50,464.32/x
  3. Step 3: Cross multiply
    92,906.70x = 128,209.14 × 50,464.32
  4. Step 4: Simplify right side
    92,906.70x = 6,469,987,067.88
  5. Step 5: Solve for x
    x = 6,469,987,067.88/92,906.70
  6. Step 6: Final answer
    x = 69,639.62

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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.