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Finding the Fourth Proportional to 6,646.92, 9,175.86 and 3,851.88

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Solution

The fourth proportional to 6,646.92, 9,175.86 and 3,851.88 is: 5,317.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,646.92 : 9,175.86 = 3,851.88 : x
  2. Step 2: Convert to fraction form
    6,646.92/9,175.86 = 3,851.88/x
  3. Step 3: Cross multiply
    6,646.92x = 9,175.86 × 3,851.88
  4. Step 4: Simplify right side
    6,646.92x = 35,344,311.62
  5. Step 5: Solve for x
    x = 35,344,311.62/6,646.92
  6. Step 6: Final answer
    x = 5,317.40

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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.