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Finding the Fourth Proportional to 10,887.94, 15,025.62 and 6,639.22

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Solution

The fourth proportional to 10,887.94, 15,025.62 and 6,639.22 is: 9,162.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.94 : 15,025.62 = 6,639.22 : x
  2. Step 2: Convert to fraction form
    10,887.94/15,025.62 = 6,639.22/x
  3. Step 3: Cross multiply
    10,887.94x = 15,025.62 × 6,639.22
  4. Step 4: Simplify right side
    10,887.94x = 99,758,396.82
  5. Step 5: Solve for x
    x = 99,758,396.82/10,887.94
  6. Step 6: Final answer
    x = 9,162.28

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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.