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Finding the Fourth Proportional to 139,558.52, 192,523.08 and 82,929.80

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Solution

The fourth proportional to 139,558.52, 192,523.08 and 82,929.80 is: 114,402.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,558.52 : 192,523.08 = 82,929.80 : x
  2. Step 2: Convert to fraction form
    139,558.52/192,523.08 = 82,929.80/x
  3. Step 3: Cross multiply
    139,558.52x = 192,523.08 × 82,929.80
  4. Step 4: Simplify right side
    139,558.52x = 15,965,900,519.78
  5. Step 5: Solve for x
    x = 15,965,900,519.78/139,558.52
  6. Step 6: Final answer
    x = 114,402.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.