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Finding the Fourth Proportional to 16,463.36, 22,721.60 and 9,388.16

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Solution

The fourth proportional to 16,463.36, 22,721.60 and 9,388.16 is: 12,956.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,463.36 : 22,721.60 = 9,388.16 : x
  2. Step 2: Convert to fraction form
    16,463.36/22,721.60 = 9,388.16/x
  3. Step 3: Cross multiply
    16,463.36x = 22,721.60 × 9,388.16
  4. Step 4: Simplify right side
    16,463.36x = 213,314,016.26
  5. Step 5: Solve for x
    x = 213,314,016.26/16,463.36
  6. Step 6: Final answer
    x = 12,956.89

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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.