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Finding the Fourth Proportional to 71,452.80, 98,600.96 and 39,619.44

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Solution

The fourth proportional to 71,452.80, 98,600.96 and 39,619.44 is: 54,672.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,452.80 : 98,600.96 = 39,619.44 : x
  2. Step 2: Convert to fraction form
    71,452.80/98,600.96 = 39,619.44/x
  3. Step 3: Cross multiply
    71,452.80x = 98,600.96 × 39,619.44
  4. Step 4: Simplify right side
    71,452.80x = 3,906,514,818.66
  5. Step 5: Solve for x
    x = 3,906,514,818.66/71,452.80
  6. Step 6: Final answer
    x = 54,672.66

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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.