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Finding the Fourth Proportional to 331,940.75, 458,076.14 and 188,700.80

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Solution

The fourth proportional to 331,940.75, 458,076.14 and 188,700.80 is: 260,405.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,940.75 : 458,076.14 = 188,700.80 : x
  2. Step 2: Convert to fraction form
    331,940.75/458,076.14 = 188,700.80/x
  3. Step 3: Cross multiply
    331,940.75x = 458,076.14 × 188,700.80
  4. Step 4: Simplify right side
    331,940.75x = 86,439,330,845.03
  5. Step 5: Solve for x
    x = 86,439,330,845.03/331,940.75
  6. Step 6: Final answer
    x = 260,405.91

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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.