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Finding the Fourth Proportional to 132,134.60, 198,201.90 and 105,890.60

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Solution

The fourth proportional to 132,134.60, 198,201.90 and 105,890.60 is: 158,835.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,134.60 : 198,201.90 = 105,890.60 : x
  2. Step 2: Convert to fraction form
    132,134.60/198,201.90 = 105,890.60/x
  3. Step 3: Cross multiply
    132,134.60x = 198,201.90 × 105,890.60
  4. Step 4: Simplify right side
    132,134.60x = 20,987,718,112.14
  5. Step 5: Solve for x
    x = 20,987,718,112.14/132,134.60
  6. Step 6: Final answer
    x = 158,835.90

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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.