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Finding the Fourth Proportional to 71,163.36, 98,205.68 and 38,898.60

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Solution

The fourth proportional to 71,163.36, 98,205.68 and 38,898.60 is: 53,680.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,163.36 : 98,205.68 = 38,898.60 : x
  2. Step 2: Convert to fraction form
    71,163.36/98,205.68 = 38,898.60/x
  3. Step 3: Cross multiply
    71,163.36x = 98,205.68 × 38,898.60
  4. Step 4: Simplify right side
    71,163.36x = 3,820,063,464.05
  5. Step 5: Solve for x
    x = 3,820,063,464.05/71,163.36
  6. Step 6: Final answer
    x = 53,680.20

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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.