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Finding the Fourth Proportional to 132,624.54, 198,969.21 and 66,081.42

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Solution

The fourth proportional to 132,624.54, 198,969.21 and 66,081.42 is: 99,138.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,624.54 : 198,969.21 = 66,081.42 : x
  2. Step 2: Convert to fraction form
    132,624.54/198,969.21 = 66,081.42/x
  3. Step 3: Cross multiply
    132,624.54x = 198,969.21 × 66,081.42
  4. Step 4: Simplify right side
    132,624.54x = 13,148,167,933.08
  5. Step 5: Solve for x
    x = 13,148,167,933.08/132,624.54
  6. Step 6: Final answer
    x = 99,138.27

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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.