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Finding the Fourth Proportional to 132,940.59, 199,244.58 and 66,399.29

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Solution

The fourth proportional to 132,940.59, 199,244.58 and 66,399.29 is: 99,515.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,940.59 : 199,244.58 = 66,399.29 : x
  2. Step 2: Convert to fraction form
    132,940.59/199,244.58 = 66,399.29/x
  3. Step 3: Cross multiply
    132,940.59x = 199,244.58 × 66,399.29
  4. Step 4: Simplify right side
    132,940.59x = 13,229,699,644.54
  5. Step 5: Solve for x
    x = 13,229,699,644.54/132,940.59
  6. Step 6: Final answer
    x = 99,515.88

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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.