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Finding the Fourth Proportional to 18,290.84, 25,218.42 and 14,930.24

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Solution

The fourth proportional to 18,290.84, 25,218.42 and 14,930.24 is: 20,585.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,290.84 : 25,218.42 = 14,930.24 : x
  2. Step 2: Convert to fraction form
    18,290.84/25,218.42 = 14,930.24/x
  3. Step 3: Cross multiply
    18,290.84x = 25,218.42 × 14,930.24
  4. Step 4: Simplify right side
    18,290.84x = 376,517,063.02
  5. Step 5: Solve for x
    x = 376,517,063.02/18,290.84
  6. Step 6: Final answer
    x = 20,585.01

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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.