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Finding the Fourth Proportional to 71,447.76, 98,596.44 and 39,616.38

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Solution

The fourth proportional to 71,447.76, 98,596.44 and 39,616.38 is: 54,669.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,447.76 : 98,596.44 = 39,616.38 : x
  2. Step 2: Convert to fraction form
    71,447.76/98,596.44 = 39,616.38/x
  3. Step 3: Cross multiply
    71,447.76x = 98,596.44 × 39,616.38
  4. Step 4: Simplify right side
    71,447.76x = 3,906,034,033.69
  5. Step 5: Solve for x
    x = 3,906,034,033.69/71,447.76
  6. Step 6: Final answer
    x = 54,669.79

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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.