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Finding the Fourth Proportional to 5,249.12, 7,245.12 and 3,011.68

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Solution

The fourth proportional to 5,249.12, 7,245.12 and 3,011.68 is: 4,156.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,249.12 : 7,245.12 = 3,011.68 : x
  2. Step 2: Convert to fraction form
    5,249.12/7,245.12 = 3,011.68/x
  3. Step 3: Cross multiply
    5,249.12x = 7,245.12 × 3,011.68
  4. Step 4: Simplify right side
    5,249.12x = 21,819,983.00
  5. Step 5: Solve for x
    x = 21,819,983.00/5,249.12
  6. Step 6: Final answer
    x = 4,156.88

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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.