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Finding the Fourth Proportional to 22,491.20, 31,024.96 and 13,058.56

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Solution

The fourth proportional to 22,491.20, 31,024.96 and 13,058.56 is: 18,013.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,491.20 : 31,024.96 = 13,058.56 : x
  2. Step 2: Convert to fraction form
    22,491.20/31,024.96 = 13,058.56/x
  3. Step 3: Cross multiply
    22,491.20x = 31,024.96 × 13,058.56
  4. Step 4: Simplify right side
    22,491.20x = 405,141,301.66
  5. Step 5: Solve for x
    x = 405,141,301.66/22,491.20
  6. Step 6: Final answer
    x = 18,013.33

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.