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Finding the Fourth Proportional to 139,372.68, 192,334.82 and 82,014.24

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Solution

The fourth proportional to 139,372.68, 192,334.82 and 82,014.24 is: 113,179.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,372.68 : 192,334.82 = 82,014.24 : x
  2. Step 2: Convert to fraction form
    139,372.68/192,334.82 = 82,014.24/x
  3. Step 3: Cross multiply
    139,372.68x = 192,334.82 × 82,014.24
  4. Step 4: Simplify right side
    139,372.68x = 15,774,193,677.77
  5. Step 5: Solve for x
    x = 15,774,193,677.77/139,372.68
  6. Step 6: Final answer
    x = 113,179.96

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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.