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Finding the Fourth Proportional to 93,780, 140,704.56 and 49,404.96

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Solution

The fourth proportional to 93,780, 140,704.56 and 49,404.96 is: 74,125.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,780 : 140,704.56 = 49,404.96 : x
  2. Step 2: Convert to fraction form
    93,780/140,704.56 = 49,404.96/x
  3. Step 3: Cross multiply
    93,780x = 140,704.56 × 49,404.96
  4. Step 4: Simplify right side
    93,780x = 6,951,503,158.62
  5. Step 5: Solve for x
    x = 6,951,503,158.62/93,780
  6. Step 6: Final answer
    x = 74,125.65

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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.