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Finding the Fourth Proportional to 132,397.20, 182,811.20 and 81,433.55

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Solution

The fourth proportional to 132,397.20, 182,811.20 and 81,433.55 is: 112,441.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,397.20 : 182,811.20 = 81,433.55 : x
  2. Step 2: Convert to fraction form
    132,397.20/182,811.20 = 81,433.55/x
  3. Step 3: Cross multiply
    132,397.20x = 182,811.20 × 81,433.55
  4. Step 4: Simplify right side
    132,397.20x = 14,886,965,045.62
  5. Step 5: Solve for x
    x = 14,886,965,045.62/132,397.20
  6. Step 6: Final answer
    x = 112,441.69

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.