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Finding the Fourth Proportional to 139,493.35, 192,498.56 and 75,832.75

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Solution

The fourth proportional to 139,493.35, 192,498.56 and 75,832.75 is: 104,647.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,493.35 : 192,498.56 = 75,832.75 : x
  2. Step 2: Convert to fraction form
    139,493.35/192,498.56 = 75,832.75/x
  3. Step 3: Cross multiply
    139,493.35x = 192,498.56 × 75,832.75
  4. Step 4: Simplify right side
    139,493.35x = 14,597,694,796.68
  5. Step 5: Solve for x
    x = 14,597,694,796.68/139,493.35
  6. Step 6: Final answer
    x = 104,647.96

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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.