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Finding the Fourth Proportional to 18,654.68, 27,986.88 and 6,968

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Solution

The fourth proportional to 18,654.68, 27,986.88 and 6,968 is: 10,453.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,654.68 : 27,986.88 = 6,968 : x
  2. Step 2: Convert to fraction form
    18,654.68/27,986.88 = 6,968/x
  3. Step 3: Cross multiply
    18,654.68x = 27,986.88 × 6,968
  4. Step 4: Simplify right side
    18,654.68x = 195,012,579.84
  5. Step 5: Solve for x
    x = 195,012,579.84/18,654.68
  6. Step 6: Final answer
    x = 10,453.82

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Why These Related Problems?

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