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Finding the Fourth Proportional to 18,394.74, 27,603.10 and 8,537.42

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Solution

The fourth proportional to 18,394.74, 27,603.10 and 8,537.42 is: 12,811.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,394.74 : 27,603.10 = 8,537.42 : x
  2. Step 2: Convert to fraction form
    18,394.74/27,603.10 = 8,537.42/x
  3. Step 3: Cross multiply
    18,394.74x = 27,603.10 × 8,537.42
  4. Step 4: Simplify right side
    18,394.74x = 235,659,258.00
  5. Step 5: Solve for x
    x = 235,659,258.00/18,394.74
  6. Step 6: Final answer
    x = 12,811.23

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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.