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Finding the Fourth Proportional to 93,195.90, 139,793.85 and 53,720.55

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Solution

The fourth proportional to 93,195.90, 139,793.85 and 53,720.55 is: 80,580.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,195.90 : 139,793.85 = 53,720.55 : x
  2. Step 2: Convert to fraction form
    93,195.90/139,793.85 = 53,720.55/x
  3. Step 3: Cross multiply
    93,195.90x = 139,793.85 × 53,720.55
  4. Step 4: Simplify right side
    93,195.90x = 7,509,802,508.62
  5. Step 5: Solve for x
    x = 7,509,802,508.62/93,195.90
  6. Step 6: Final answer
    x = 80,580.83

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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.