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Finding the Fourth Proportional to 125,554.78, 188,359.91 and 41,311.54

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Solution

The fourth proportional to 125,554.78, 188,359.91 and 41,311.54 is: 61,976.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,554.78 : 188,359.91 = 41,311.54 : x
  2. Step 2: Convert to fraction form
    125,554.78/188,359.91 = 41,311.54/x
  3. Step 3: Cross multiply
    125,554.78x = 188,359.91 × 41,311.54
  4. Step 4: Simplify right side
    125,554.78x = 7,781,437,956.36
  5. Step 5: Solve for x
    x = 7,781,437,956.36/125,554.78
  6. Step 6: Final answer
    x = 61,976.44

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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.