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Finding the Fourth Proportional to 18,568.74, 27,854.25 and 5,422.02

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Solution

The fourth proportional to 18,568.74, 27,854.25 and 5,422.02 is: 8,133.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,568.74 : 27,854.25 = 5,422.02 : x
  2. Step 2: Convert to fraction form
    18,568.74/27,854.25 = 5,422.02/x
  3. Step 3: Cross multiply
    18,568.74x = 27,854.25 × 5,422.02
  4. Step 4: Simplify right side
    18,568.74x = 151,026,300.59
  5. Step 5: Solve for x
    x = 151,026,300.59/18,568.74
  6. Step 6: Final answer
    x = 8,133.36

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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.