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Finding the Fourth Proportional to 71,973.69, 107,960.37 and 19,383.22

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Solution

The fourth proportional to 71,973.69, 107,960.37 and 19,383.22 is: 29,074.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,973.69 : 107,960.37 = 19,383.22 : x
  2. Step 2: Convert to fraction form
    71,973.69/107,960.37 = 19,383.22/x
  3. Step 3: Cross multiply
    71,973.69x = 107,960.37 × 19,383.22
  4. Step 4: Simplify right side
    71,973.69x = 2,092,619,602.99
  5. Step 5: Solve for x
    x = 2,092,619,602.99/71,973.69
  6. Step 6: Final answer
    x = 29,074.79

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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.