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Finding the Fourth Proportional to 132,990.55, 199,485.80 and 57,072.62

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Solution

The fourth proportional to 132,990.55, 199,485.80 and 57,072.62 is: 85,608.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,990.55 : 199,485.80 = 57,072.62 : x
  2. Step 2: Convert to fraction form
    132,990.55/199,485.80 = 57,072.62/x
  3. Step 3: Cross multiply
    132,990.55x = 199,485.80 × 57,072.62
  4. Step 4: Simplify right side
    132,990.55x = 11,385,177,258.80
  5. Step 5: Solve for x
    x = 11,385,177,258.80/132,990.55
  6. Step 6: Final answer
    x = 85,608.92

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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.