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Finding the Fourth Proportional to 137,196.91, 205,789.18 and 57,201.92

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Solution

The fourth proportional to 137,196.91, 205,789.18 and 57,201.92 is: 85,800.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,196.91 : 205,789.18 = 57,201.92 : x
  2. Step 2: Convert to fraction form
    137,196.91/205,789.18 = 57,201.92/x
  3. Step 3: Cross multiply
    137,196.91x = 205,789.18 × 57,201.92
  4. Step 4: Simplify right side
    137,196.91x = 11,771,536,211.23
  5. Step 5: Solve for x
    x = 11,771,536,211.23/137,196.91
  6. Step 6: Final answer
    x = 85,800.30

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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.