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Finding the Fourth Proportional to 18,608.40, 25,679.28 and 10,224.84

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Solution

The fourth proportional to 18,608.40, 25,679.28 and 10,224.84 is: 14,110.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,608.40 : 25,679.28 = 10,224.84 : x
  2. Step 2: Convert to fraction form
    18,608.40/25,679.28 = 10,224.84/x
  3. Step 3: Cross multiply
    18,608.40x = 25,679.28 × 10,224.84
  4. Step 4: Simplify right side
    18,608.40x = 262,566,529.32
  5. Step 5: Solve for x
    x = 262,566,529.32/18,608.40
  6. Step 6: Final answer
    x = 14,110.11

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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.