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Finding the Fourth Proportional to 6,764.96, 9,329.60 and 4,247.31

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Solution

The fourth proportional to 6,764.96, 9,329.60 and 4,247.31 is: 5,857.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,764.96 : 9,329.60 = 4,247.31 : x
  2. Step 2: Convert to fraction form
    6,764.96/9,329.60 = 4,247.31/x
  3. Step 3: Cross multiply
    6,764.96x = 9,329.60 × 4,247.31
  4. Step 4: Simplify right side
    6,764.96x = 39,625,646.11
  5. Step 5: Solve for x
    x = 39,625,646.11/6,764.96
  6. Step 6: Final answer
    x = 5,857.48

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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.