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Finding the Fourth Proportional to 136,016.70, 204,092.10 and 61,189.80

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Solution

The fourth proportional to 136,016.70, 204,092.10 and 61,189.80 is: 91,814.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,016.70 : 204,092.10 = 61,189.80 : x
  2. Step 2: Convert to fraction form
    136,016.70/204,092.10 = 61,189.80/x
  3. Step 3: Cross multiply
    136,016.70x = 204,092.10 × 61,189.80
  4. Step 4: Simplify right side
    136,016.70x = 12,488,354,780.58
  5. Step 5: Solve for x
    x = 12,488,354,780.58/136,016.70
  6. Step 6: Final answer
    x = 91,814.86

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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.