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Finding the Fourth Proportional to 6,939.64, 9,576.90 and 3,796.03

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Solution

The fourth proportional to 6,939.64, 9,576.90 and 3,796.03 is: 5,238.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,939.64 : 9,576.90 = 3,796.03 : x
  2. Step 2: Convert to fraction form
    6,939.64/9,576.90 = 3,796.03/x
  3. Step 3: Cross multiply
    6,939.64x = 9,576.90 × 3,796.03
  4. Step 4: Simplify right side
    6,939.64x = 36,354,199.71
  5. Step 5: Solve for x
    x = 36,354,199.71/6,939.64
  6. Step 6: Final answer
    x = 5,238.63

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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.