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Finding the Fourth Proportional to 19,647.90, 27,114.28 and 10,695.44

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Solution

The fourth proportional to 19,647.90, 27,114.28 and 10,695.44 is: 14,759.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,647.90 : 27,114.28 = 10,695.44 : x
  2. Step 2: Convert to fraction form
    19,647.90/27,114.28 = 10,695.44/x
  3. Step 3: Cross multiply
    19,647.90x = 27,114.28 × 10,695.44
  4. Step 4: Simplify right side
    19,647.90x = 289,999,195.93
  5. Step 5: Solve for x
    x = 289,999,195.93/19,647.90
  6. Step 6: Final answer
    x = 14,759.81

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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.