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Finding the Fourth Proportional to 17,811.21, 24,575.49 and 10,639.20

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Solution

The fourth proportional to 17,811.21, 24,575.49 and 10,639.20 is: 14,679.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,811.21 : 24,575.49 = 10,639.20 : x
  2. Step 2: Convert to fraction form
    17,811.21/24,575.49 = 10,639.20/x
  3. Step 3: Cross multiply
    17,811.21x = 24,575.49 × 10,639.20
  4. Step 4: Simplify right side
    17,811.21x = 261,463,553.21
  5. Step 5: Solve for x
    x = 261,463,553.21/17,811.21
  6. Step 6: Final answer
    x = 14,679.72

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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.