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Finding the Fourth Proportional to 18,067.79, 27,090.28 and 8,710.16

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Solution

The fourth proportional to 18,067.79, 27,090.28 and 8,710.16 is: 13,059.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,067.79 : 27,090.28 = 8,710.16 : x
  2. Step 2: Convert to fraction form
    18,067.79/27,090.28 = 8,710.16/x
  3. Step 3: Cross multiply
    18,067.79x = 27,090.28 × 8,710.16
  4. Step 4: Simplify right side
    18,067.79x = 235,960,516.02
  5. Step 5: Solve for x
    x = 235,960,516.02/18,067.79
  6. Step 6: Final answer
    x = 13,059.74

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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.