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Finding the Fourth Proportional to 18,040.40, 27,060.60 and 13,666.40

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Solution

The fourth proportional to 18,040.40, 27,060.60 and 13,666.40 is: 20,499.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,040.40 : 27,060.60 = 13,666.40 : x
  2. Step 2: Convert to fraction form
    18,040.40/27,060.60 = 13,666.40/x
  3. Step 3: Cross multiply
    18,040.40x = 27,060.60 × 13,666.40
  4. Step 4: Simplify right side
    18,040.40x = 369,820,983.84
  5. Step 5: Solve for x
    x = 369,820,983.84/18,040.40
  6. Step 6: Final answer
    x = 20,499.60

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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.