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Finding the Fourth Proportional to 129,951.72, 194,770.60 and 63,291.96

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Solution

The fourth proportional to 129,951.72, 194,770.60 and 63,291.96 is: 94,861.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,951.72 : 194,770.60 = 63,291.96 : x
  2. Step 2: Convert to fraction form
    129,951.72/194,770.60 = 63,291.96/x
  3. Step 3: Cross multiply
    129,951.72x = 194,770.60 × 63,291.96
  4. Step 4: Simplify right side
    129,951.72x = 12,327,413,024.38
  5. Step 5: Solve for x
    x = 12,327,413,024.38/129,951.72
  6. Step 6: Final answer
    x = 94,861.48

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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.