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Finding the Fourth Proportional to 6,464.17, 8,921.19 and 3,812.44

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Solution

The fourth proportional to 6,464.17, 8,921.19 and 3,812.44 is: 5,261.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,464.17 : 8,921.19 = 3,812.44 : x
  2. Step 2: Convert to fraction form
    6,464.17/8,921.19 = 3,812.44/x
  3. Step 3: Cross multiply
    6,464.17x = 8,921.19 × 3,812.44
  4. Step 4: Simplify right side
    6,464.17x = 34,011,501.60
  5. Step 5: Solve for x
    x = 34,011,501.60/6,464.17
  6. Step 6: Final answer
    x = 5,261.54

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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.