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Finding the Fourth Proportional to 7,968.17, 10,996.13 and 4,431.30

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Solution

The fourth proportional to 7,968.17, 10,996.13 and 4,431.30 is: 6,115.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,968.17 : 10,996.13 = 4,431.30 : x
  2. Step 2: Convert to fraction form
    7,968.17/10,996.13 = 4,431.30/x
  3. Step 3: Cross multiply
    7,968.17x = 10,996.13 × 4,431.30
  4. Step 4: Simplify right side
    7,968.17x = 48,727,161.95
  5. Step 5: Solve for x
    x = 48,727,161.95/7,968.17
  6. Step 6: Final answer
    x = 6,115.23

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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.