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Finding the Fourth Proportional to 18,400.68, 27,612 and 6,714.72

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Solution

The fourth proportional to 18,400.68, 27,612 and 6,714.72 is: 10,076.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,400.68 : 27,612 = 6,714.72 : x
  2. Step 2: Convert to fraction form
    18,400.68/27,612 = 6,714.72/x
  3. Step 3: Cross multiply
    18,400.68x = 27,612 × 6,714.72
  4. Step 4: Simplify right side
    18,400.68x = 185,406,848.64
  5. Step 5: Solve for x
    x = 185,406,848.64/18,400.68
  6. Step 6: Final answer
    x = 10,076.09

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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.