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Finding the Fourth Proportional to 100,789.26, 151,172.14 and 37,611.56

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Solution

The fourth proportional to 100,789.26, 151,172.14 and 37,611.56 is: 56,412.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,789.26 : 151,172.14 = 37,611.56 : x
  2. Step 2: Convert to fraction form
    100,789.26/151,172.14 = 37,611.56/x
  3. Step 3: Cross multiply
    100,789.26x = 151,172.14 × 37,611.56
  4. Step 4: Simplify right side
    100,789.26x = 5,685,820,013.94
  5. Step 5: Solve for x
    x = 5,685,820,013.94/100,789.26
  6. Step 6: Final answer
    x = 56,412.96

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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.