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Finding the Fourth Proportional to 18,236.16, 25,165.55 and 10,278.23

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Solution

The fourth proportional to 18,236.16, 25,165.55 and 10,278.23 is: 14,183.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,236.16 : 25,165.55 = 10,278.23 : x
  2. Step 2: Convert to fraction form
    18,236.16/25,165.55 = 10,278.23/x
  3. Step 3: Cross multiply
    18,236.16x = 25,165.55 × 10,278.23
  4. Step 4: Simplify right side
    18,236.16x = 258,657,210.84
  5. Step 5: Solve for x
    x = 258,657,210.84/18,236.16
  6. Step 6: Final answer
    x = 14,183.75

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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.