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Finding the Fourth Proportional to 13,961.16, 19,243.98 and 12,816.63

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Solution

The fourth proportional to 13,961.16, 19,243.98 and 12,816.63 is: 17,666.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,961.16 : 19,243.98 = 12,816.63 : x
  2. Step 2: Convert to fraction form
    13,961.16/19,243.98 = 12,816.63/x
  3. Step 3: Cross multiply
    13,961.16x = 19,243.98 × 12,816.63
  4. Step 4: Simplify right side
    13,961.16x = 246,642,971.39
  5. Step 5: Solve for x
    x = 246,642,971.39/13,961.16
  6. Step 6: Final answer
    x = 17,666.37

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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.