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Finding the Fourth Proportional to 18,597.12, 27,871.96 and 8,714.60

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Solution

The fourth proportional to 18,597.12, 27,871.96 and 8,714.60 is: 13,060.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,597.12 : 27,871.96 = 8,714.60 : x
  2. Step 2: Convert to fraction form
    18,597.12/27,871.96 = 8,714.60/x
  3. Step 3: Cross multiply
    18,597.12x = 27,871.96 × 8,714.60
  4. Step 4: Simplify right side
    18,597.12x = 242,892,982.62
  5. Step 5: Solve for x
    x = 242,892,982.62/18,597.12
  6. Step 6: Final answer
    x = 13,060.78

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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.