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Finding the Fourth Proportional to 11,892.10, 16,405.95 and 7,173.76

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Solution

The fourth proportional to 11,892.10, 16,405.95 and 7,173.76 is: 9,896.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,892.10 : 16,405.95 = 7,173.76 : x
  2. Step 2: Convert to fraction form
    11,892.10/16,405.95 = 7,173.76/x
  3. Step 3: Cross multiply
    11,892.10x = 16,405.95 × 7,173.76
  4. Step 4: Simplify right side
    11,892.10x = 117,692,347.87
  5. Step 5: Solve for x
    x = 117,692,347.87/11,892.10
  6. Step 6: Final answer
    x = 9,896.68

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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.