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Finding the Fourth Proportional to 11,858.73, 16,362.68 and 7,143.32

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Solution

The fourth proportional to 11,858.73, 16,362.68 and 7,143.32 is: 9,856.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,858.73 : 16,362.68 = 7,143.32 : x
  2. Step 2: Convert to fraction form
    11,858.73/16,362.68 = 7,143.32/x
  3. Step 3: Cross multiply
    11,858.73x = 16,362.68 × 7,143.32
  4. Step 4: Simplify right side
    11,858.73x = 116,883,859.30
  5. Step 5: Solve for x
    x = 116,883,859.30/11,858.73
  6. Step 6: Final answer
    x = 9,856.36

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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.