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Finding the Fourth Proportional to 70,231.87, 96,929.47 and 39,611.26

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Solution

The fourth proportional to 70,231.87, 96,929.47 and 39,611.26 is: 54,668.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,231.87 : 96,929.47 = 39,611.26 : x
  2. Step 2: Convert to fraction form
    70,231.87/96,929.47 = 39,611.26/x
  3. Step 3: Cross multiply
    70,231.87x = 96,929.47 × 39,611.26
  4. Step 4: Simplify right side
    70,231.87x = 3,839,498,174.69
  5. Step 5: Solve for x
    x = 3,839,498,174.69/70,231.87
  6. Step 6: Final answer
    x = 54,668.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.