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Finding the Fourth Proportional to 17,621.22, 24,318.40 and 11,642.40

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Solution

The fourth proportional to 17,621.22, 24,318.40 and 11,642.40 is: 16,067.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,621.22 : 24,318.40 = 11,642.40 : x
  2. Step 2: Convert to fraction form
    17,621.22/24,318.40 = 11,642.40/x
  3. Step 3: Cross multiply
    17,621.22x = 24,318.40 × 11,642.40
  4. Step 4: Simplify right side
    17,621.22x = 283,124,540.16
  5. Step 5: Solve for x
    x = 283,124,540.16/17,621.22
  6. Step 6: Final answer
    x = 16,067.25

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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.