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Finding the Fourth Proportional to 11,207.80, 15,468.78 and 6,494.68

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Solution

The fourth proportional to 11,207.80, 15,468.78 and 6,494.68 is: 8,963.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,207.80 : 15,468.78 = 6,494.68 : x
  2. Step 2: Convert to fraction form
    11,207.80/15,468.78 = 6,494.68/x
  3. Step 3: Cross multiply
    11,207.80x = 15,468.78 × 6,494.68
  4. Step 4: Simplify right side
    11,207.80x = 100,464,776.09
  5. Step 5: Solve for x
    x = 100,464,776.09/11,207.80
  6. Step 6: Final answer
    x = 8,963.83

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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.