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Finding the Fourth Proportional to 8,199.72, 11,316.24 and 4,662.72

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Solution

The fourth proportional to 8,199.72, 11,316.24 and 4,662.72 is: 6,434.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,199.72 : 11,316.24 = 4,662.72 : x
  2. Step 2: Convert to fraction form
    8,199.72/11,316.24 = 4,662.72/x
  3. Step 3: Cross multiply
    8,199.72x = 11,316.24 × 4,662.72
  4. Step 4: Simplify right side
    8,199.72x = 52,764,458.57
  5. Step 5: Solve for x
    x = 52,764,458.57/8,199.72
  6. Step 6: Final answer
    x = 6,434.91

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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.