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Finding the Fourth Proportional to 220,994.88, 331,500.53 and 71,237.33

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Solution

The fourth proportional to 220,994.88, 331,500.53 and 71,237.33 is: 106,858.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,994.88 : 331,500.53 = 71,237.33 : x
  2. Step 2: Convert to fraction form
    220,994.88/331,500.53 = 71,237.33/x
  3. Step 3: Cross multiply
    220,994.88x = 331,500.53 × 71,237.33
  4. Step 4: Simplify right side
    220,994.88x = 23,615,212,650.78
  5. Step 5: Solve for x
    x = 23,615,212,650.78/220,994.88
  6. Step 6: Final answer
    x = 106,858.64

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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.