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Finding the Fourth Proportional to 125,961.67, 188,020.92 and 111,015.42

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Solution

The fourth proportional to 125,961.67, 188,020.92 and 111,015.42 is: 165,710.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,961.67 : 188,020.92 = 111,015.42 : x
  2. Step 2: Convert to fraction form
    125,961.67/188,020.92 = 111,015.42/x
  3. Step 3: Cross multiply
    125,961.67x = 188,020.92 × 111,015.42
  4. Step 4: Simplify right side
    125,961.67x = 20,873,221,402.59
  5. Step 5: Solve for x
    x = 20,873,221,402.59/125,961.67
  6. Step 6: Final answer
    x = 165,710.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.