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Finding the Fourth Proportional to 125,847.90, 188,896.68 and 111,708.54

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Solution

The fourth proportional to 125,847.90, 188,896.68 and 111,708.54 is: 167,673.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,847.90 : 188,896.68 = 111,708.54 : x
  2. Step 2: Convert to fraction form
    125,847.90/188,896.68 = 111,708.54/x
  3. Step 3: Cross multiply
    125,847.90x = 188,896.68 × 111,708.54
  4. Step 4: Simplify right side
    125,847.90x = 21,101,372,333.65
  5. Step 5: Solve for x
    x = 21,101,372,333.65/125,847.90
  6. Step 6: Final answer
    x = 167,673.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.