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Finding the Fourth Proportional to 22,418.13, 33,619.17 and 7,422.51

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Solution

The fourth proportional to 22,418.13, 33,619.17 and 7,422.51 is: 11,131.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,418.13 : 33,619.17 = 7,422.51 : x
  2. Step 2: Convert to fraction form
    22,418.13/33,619.17 = 7,422.51/x
  3. Step 3: Cross multiply
    22,418.13x = 33,619.17 × 7,422.51
  4. Step 4: Simplify right side
    22,418.13x = 249,538,625.52
  5. Step 5: Solve for x
    x = 249,538,625.52/22,418.13
  6. Step 6: Final answer
    x = 11,131.11

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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.