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Finding the Fourth Proportional to 7,197.75, 9,932.90 and 4,213.44

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Solution

The fourth proportional to 7,197.75, 9,932.90 and 4,213.44 is: 5,814.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,197.75 : 9,932.90 = 4,213.44 : x
  2. Step 2: Convert to fraction form
    7,197.75/9,932.90 = 4,213.44/x
  3. Step 3: Cross multiply
    7,197.75x = 9,932.90 × 4,213.44
  4. Step 4: Simplify right side
    7,197.75x = 41,851,657.11
  5. Step 5: Solve for x
    x = 41,851,657.11/7,197.75
  6. Step 6: Final answer
    x = 5,814.55

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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.