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Finding the Fourth Proportional to 39,578.88, 54,624.05 and 22,579.21

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Solution

The fourth proportional to 39,578.88, 54,624.05 and 22,579.21 is: 31,162.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,578.88 : 54,624.05 = 22,579.21 : x
  2. Step 2: Convert to fraction form
    39,578.88/54,624.05 = 22,579.21/x
  3. Step 3: Cross multiply
    39,578.88x = 54,624.05 × 22,579.21
  4. Step 4: Simplify right side
    39,578.88x = 1,233,367,896.00
  5. Step 5: Solve for x
    x = 1,233,367,896.00/39,578.88
  6. Step 6: Final answer
    x = 31,162.27

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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.