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Finding the Fourth Proportional to 18,530.68, 27,796.20 and 4,679.68

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Solution

The fourth proportional to 18,530.68, 27,796.20 and 4,679.68 is: 7,019.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,530.68 : 27,796.20 = 4,679.68 : x
  2. Step 2: Convert to fraction form
    18,530.68/27,796.20 = 4,679.68/x
  3. Step 3: Cross multiply
    18,530.68x = 27,796.20 × 4,679.68
  4. Step 4: Simplify right side
    18,530.68x = 130,077,321.22
  5. Step 5: Solve for x
    x = 130,077,321.22/18,530.68
  6. Step 6: Final answer
    x = 7,019.57

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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.