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Finding the Fourth Proportional to 93,252.38, 139,879.55 and 74,650.68

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Solution

The fourth proportional to 93,252.38, 139,879.55 and 74,650.68 is: 111,976.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,252.38 : 139,879.55 = 74,650.68 : x
  2. Step 2: Convert to fraction form
    93,252.38/139,879.55 = 74,650.68/x
  3. Step 3: Cross multiply
    93,252.38x = 139,879.55 × 74,650.68
  4. Step 4: Simplify right side
    93,252.38x = 10,442,103,712.22
  5. Step 5: Solve for x
    x = 10,442,103,712.22/93,252.38
  6. Step 6: Final answer
    x = 111,976.81

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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.