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Finding the Fourth Proportional to 12,013.17, 18,021.49 and 3,693.89

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Solution

The fourth proportional to 12,013.17, 18,021.49 and 3,693.89 is: 5,541.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,013.17 : 18,021.49 = 3,693.89 : x
  2. Step 2: Convert to fraction form
    12,013.17/18,021.49 = 3,693.89/x
  3. Step 3: Cross multiply
    12,013.17x = 18,021.49 × 3,693.89
  4. Step 4: Simplify right side
    12,013.17x = 66,569,383.66
  5. Step 5: Solve for x
    x = 66,569,383.66/12,013.17
  6. Step 6: Final answer
    x = 5,541.36

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.