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Finding the Fourth Proportional to 18,006.35, 27,002.69 and 8,643.72

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Solution

The fourth proportional to 18,006.35, 27,002.69 and 8,643.72 is: 12,962.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,006.35 : 27,002.69 = 8,643.72 : x
  2. Step 2: Convert to fraction form
    18,006.35/27,002.69 = 8,643.72/x
  3. Step 3: Cross multiply
    18,006.35x = 27,002.69 × 8,643.72
  4. Step 4: Simplify right side
    18,006.35x = 233,403,648.39
  5. Step 5: Solve for x
    x = 233,403,648.39/18,006.35
  6. Step 6: Final answer
    x = 12,962.29

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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.