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Finding the Fourth Proportional to 6,641.92, 9,962.20 and 3,518.62

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Solution

The fourth proportional to 6,641.92, 9,962.20 and 3,518.62 is: 5,277.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641.92 : 9,962.20 = 3,518.62 : x
  2. Step 2: Convert to fraction form
    6,641.92/9,962.20 = 3,518.62/x
  3. Step 3: Cross multiply
    6,641.92x = 9,962.20 × 3,518.62
  4. Step 4: Simplify right side
    6,641.92x = 35,053,175.66
  5. Step 5: Solve for x
    x = 35,053,175.66/6,641.92
  6. Step 6: Final answer
    x = 5,277.57

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.