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Finding the Fourth Proportional to 71,198.68, 98,254.68 and 38,933.44

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Solution

The fourth proportional to 71,198.68, 98,254.68 and 38,933.44 is: 53,728.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,198.68 : 98,254.68 = 38,933.44 : x
  2. Step 2: Convert to fraction form
    71,198.68/98,254.68 = 38,933.44/x
  3. Step 3: Cross multiply
    71,198.68x = 98,254.68 × 38,933.44
  4. Step 4: Simplify right side
    71,198.68x = 3,825,392,688.50
  5. Step 5: Solve for x
    x = 3,825,392,688.50/71,198.68
  6. Step 6: Final answer
    x = 53,728.42

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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.