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Finding the Fourth Proportional to 125,991.98, 188,983.24 and 31,222.44

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Solution

The fourth proportional to 125,991.98, 188,983.24 and 31,222.44 is: 46,832.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,991.98 : 188,983.24 = 31,222.44 : x
  2. Step 2: Convert to fraction form
    125,991.98/188,983.24 = 31,222.44/x
  3. Step 3: Cross multiply
    125,991.98x = 188,983.24 × 31,222.44
  4. Step 4: Simplify right side
    125,991.98x = 5,900,517,793.85
  5. Step 5: Solve for x
    x = 5,900,517,793.85/125,991.98
  6. Step 6: Final answer
    x = 46,832.49

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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.