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Finding the Fourth Proportional to 71,166.57, 98,208.15 and 38,899.73

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Solution

The fourth proportional to 71,166.57, 98,208.15 and 38,899.73 is: 53,680.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,166.57 : 98,208.15 = 38,899.73 : x
  2. Step 2: Convert to fraction form
    71,166.57/98,208.15 = 38,899.73/x
  3. Step 3: Cross multiply
    71,166.57x = 98,208.15 × 38,899.73
  4. Step 4: Simplify right side
    71,166.57x = 3,820,270,324.30
  5. Step 5: Solve for x
    x = 3,820,270,324.30/71,166.57
  6. Step 6: Final answer
    x = 53,680.69

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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.