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Finding the Fourth Proportional to 6,215.78, 8,581.90 and 4,796.95

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Solution

The fourth proportional to 6,215.78, 8,581.90 and 4,796.95 is: 6,622.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,215.78 : 8,581.90 = 4,796.95 : x
  2. Step 2: Convert to fraction form
    6,215.78/8,581.90 = 4,796.95/x
  3. Step 3: Cross multiply
    6,215.78x = 8,581.90 × 4,796.95
  4. Step 4: Simplify right side
    6,215.78x = 41,166,902.30
  5. Step 5: Solve for x
    x = 41,166,902.30/6,215.78
  6. Step 6: Final answer
    x = 6,622.97

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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.