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Finding the Fourth Proportional to 18,694.34, 28,031.00 and 6,207.68

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Solution

The fourth proportional to 18,694.34, 28,031.00 and 6,207.68 is: 9,308.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.34 : 28,031.00 = 6,207.68 : x
  2. Step 2: Convert to fraction form
    18,694.34/28,031.00 = 6,207.68/x
  3. Step 3: Cross multiply
    18,694.34x = 28,031.00 × 6,207.68
  4. Step 4: Simplify right side
    18,694.34x = 174,007,517.12
  5. Step 5: Solve for x
    x = 174,007,517.12/18,694.34
  6. Step 6: Final answer
    x = 9,308.03

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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.