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Finding the Fourth Proportional to 129,991.42, 195,059.22 and 63,432.10

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Solution

The fourth proportional to 129,991.42, 195,059.22 and 63,432.10 is: 95,183.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,991.42 : 195,059.22 = 63,432.10 : x
  2. Step 2: Convert to fraction form
    129,991.42/195,059.22 = 63,432.10/x
  3. Step 3: Cross multiply
    129,991.42x = 195,059.22 × 63,432.10
  4. Step 4: Simplify right side
    129,991.42x = 12,373,015,948.96
  5. Step 5: Solve for x
    x = 12,373,015,948.96/129,991.42
  6. Step 6: Final answer
    x = 95,183.33

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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.