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Finding the Fourth Proportional to 18,020.40, 27,030.60 and 10,244.40

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Solution

The fourth proportional to 18,020.40, 27,030.60 and 10,244.40 is: 15,366.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,020.40 : 27,030.60 = 10,244.40 : x
  2. Step 2: Convert to fraction form
    18,020.40/27,030.60 = 10,244.40/x
  3. Step 3: Cross multiply
    18,020.40x = 27,030.60 × 10,244.40
  4. Step 4: Simplify right side
    18,020.40x = 276,912,278.64
  5. Step 5: Solve for x
    x = 276,912,278.64/18,020.40
  6. Step 6: Final answer
    x = 15,366.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.