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Finding the Fourth Proportional to 29,668.30, 40,942.49 and 16,239.66

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Solution

The fourth proportional to 29,668.30, 40,942.49 and 16,239.66 is: 22,410.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,668.30 : 40,942.49 = 16,239.66 : x
  2. Step 2: Convert to fraction form
    29,668.30/40,942.49 = 16,239.66/x
  3. Step 3: Cross multiply
    29,668.30x = 40,942.49 × 16,239.66
  4. Step 4: Simplify right side
    29,668.30x = 664,892,273.55
  5. Step 5: Solve for x
    x = 664,892,273.55/29,668.30
  6. Step 6: Final answer
    x = 22,410.87

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1.5x scale

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.