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Finding the Fourth Proportional to 120,958.48, 166,928.40 and 67,244.39

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Solution

The fourth proportional to 120,958.48, 166,928.40 and 67,244.39 is: 92,800.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,958.48 : 166,928.40 = 67,244.39 : x
  2. Step 2: Convert to fraction form
    120,958.48/166,928.40 = 67,244.39/x
  3. Step 3: Cross multiply
    120,958.48x = 166,928.40 × 67,244.39
  4. Step 4: Simplify right side
    120,958.48x = 11,224,998,095.45
  5. Step 5: Solve for x
    x = 11,224,998,095.45/120,958.48
  6. Step 6: Final answer
    x = 92,800.42

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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.