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Finding the Fourth Proportional to 139,171.88, 192,213.68 and 93,770.37

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Solution

The fourth proportional to 139,171.88, 192,213.68 and 93,770.37 is: 129,508.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,171.88 : 192,213.68 = 93,770.37 : x
  2. Step 2: Convert to fraction form
    139,171.88/192,213.68 = 93,770.37/x
  3. Step 3: Cross multiply
    139,171.88x = 192,213.68 × 93,770.37
  4. Step 4: Simplify right side
    139,171.88x = 18,023,947,423.81
  5. Step 5: Solve for x
    x = 18,023,947,423.81/139,171.88
  6. Step 6: Final answer
    x = 129,508.54

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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.