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Finding the Fourth Proportional to 13,651.48, 18,850.74 and 8,624.44

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Solution

The fourth proportional to 13,651.48, 18,850.74 and 8,624.44 is: 11,909.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.48 : 18,850.74 = 8,624.44 : x
  2. Step 2: Convert to fraction form
    13,651.48/18,850.74 = 8,624.44/x
  3. Step 3: Cross multiply
    13,651.48x = 18,850.74 × 8,624.44
  4. Step 4: Simplify right side
    13,651.48x = 162,577,076.09
  5. Step 5: Solve for x
    x = 162,577,076.09/13,651.48
  6. Step 6: Final answer
    x = 11,909.12

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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.