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Finding the Fourth Proportional to 44,613.80, 66,931.74 and 31,491.88

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Solution

The fourth proportional to 44,613.80, 66,931.74 and 31,491.88 is: 47,245.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,613.80 : 66,931.74 = 31,491.88 : x
  2. Step 2: Convert to fraction form
    44,613.80/66,931.74 = 31,491.88/x
  3. Step 3: Cross multiply
    44,613.80x = 66,931.74 × 31,491.88
  4. Step 4: Simplify right side
    44,613.80x = 2,107,806,324.27
  5. Step 5: Solve for x
    x = 2,107,806,324.27/44,613.80
  6. Step 6: Final answer
    x = 47,245.61

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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.