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Finding the Fourth Proportional to 6,633.76, 9,931.44 and 4,997.20

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Solution

The fourth proportional to 6,633.76, 9,931.44 and 4,997.20 is: 7,481.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,633.76 : 9,931.44 = 4,997.20 : x
  2. Step 2: Convert to fraction form
    6,633.76/9,931.44 = 4,997.20/x
  3. Step 3: Cross multiply
    6,633.76x = 9,931.44 × 4,997.20
  4. Step 4: Simplify right side
    6,633.76x = 49,629,391.97
  5. Step 5: Solve for x
    x = 49,629,391.97/6,633.76
  6. Step 6: Final answer
    x = 7,481.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.