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Finding the Fourth Proportional to 11,448.40, 17,164.40 and 4,422.40

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Solution

The fourth proportional to 11,448.40, 17,164.40 and 4,422.40 is: 6,630.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,448.40 : 17,164.40 = 4,422.40 : x
  2. Step 2: Convert to fraction form
    11,448.40/17,164.40 = 4,422.40/x
  3. Step 3: Cross multiply
    11,448.40x = 17,164.40 × 4,422.40
  4. Step 4: Simplify right side
    11,448.40x = 75,907,842.56
  5. Step 5: Solve for x
    x = 75,907,842.56/11,448.40
  6. Step 6: Final answer
    x = 6,630.43

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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.