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Finding the Fourth Proportional to 63,613.56, 87,824.82 and 39,772.56

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Solution

The fourth proportional to 63,613.56, 87,824.82 and 39,772.56 is: 54,909.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,613.56 : 87,824.82 = 39,772.56 : x
  2. Step 2: Convert to fraction form
    63,613.56/87,824.82 = 39,772.56/x
  3. Step 3: Cross multiply
    63,613.56x = 87,824.82 × 39,772.56
  4. Step 4: Simplify right side
    63,613.56x = 3,493,017,922.94
  5. Step 5: Solve for x
    x = 3,493,017,922.94/63,613.56
  6. Step 6: Final answer
    x = 54,909.96

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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.