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Finding the Fourth Proportional to 13,603.16, 18,767.54 and 8,890.17

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Solution

The fourth proportional to 13,603.16, 18,767.54 and 8,890.17 is: 12,265.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.16 : 18,767.54 = 8,890.17 : x
  2. Step 2: Convert to fraction form
    13,603.16/18,767.54 = 8,890.17/x
  3. Step 3: Cross multiply
    13,603.16x = 18,767.54 × 8,890.17
  4. Step 4: Simplify right side
    13,603.16x = 166,846,576.63
  5. Step 5: Solve for x
    x = 166,846,576.63/13,603.16
  6. Step 6: Final answer
    x = 12,265.29

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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.