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Finding the Fourth Proportional to 93,615.91, 140,423.86 and 31,286.41

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Solution

The fourth proportional to 93,615.91, 140,423.86 and 31,286.41 is: 46,929.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,615.91 : 140,423.86 = 31,286.41 : x
  2. Step 2: Convert to fraction form
    93,615.91/140,423.86 = 31,286.41/x
  3. Step 3: Cross multiply
    93,615.91x = 140,423.86 × 31,286.41
  4. Step 4: Simplify right side
    93,615.91x = 4,393,358,145.79
  5. Step 5: Solve for x
    x = 4,393,358,145.79/93,615.91
  6. Step 6: Final answer
    x = 46,929.61

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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.