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Finding the Fourth Proportional to 93,879.48, 140,819.10 and 31,593.72

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Solution

The fourth proportional to 93,879.48, 140,819.10 and 31,593.72 is: 47,390.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,879.48 : 140,819.10 = 31,593.72 : x
  2. Step 2: Convert to fraction form
    93,879.48/140,819.10 = 31,593.72/x
  3. Step 3: Cross multiply
    93,879.48x = 140,819.10 × 31,593.72
  4. Step 4: Simplify right side
    93,879.48x = 4,448,999,216.05
  5. Step 5: Solve for x
    x = 4,448,999,216.05/93,879.48
  6. Step 6: Final answer
    x = 47,390.54

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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.