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Finding the Fourth Proportional to 18,394.38, 27,591.97 and 4,543.38

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Solution

The fourth proportional to 18,394.38, 27,591.97 and 4,543.38 is: 6,815.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,394.38 : 27,591.97 = 4,543.38 : x
  2. Step 2: Convert to fraction form
    18,394.38/27,591.97 = 4,543.38/x
  3. Step 3: Cross multiply
    18,394.38x = 27,591.97 × 4,543.38
  4. Step 4: Simplify right side
    18,394.38x = 125,360,804.66
  5. Step 5: Solve for x
    x = 125,360,804.66/18,394.38
  6. Step 6: Final answer
    x = 6,815.17

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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.