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Finding the Fourth Proportional to 18,387.96, 25,311.30 and 16,026

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Solution

The fourth proportional to 18,387.96, 25,311.30 and 16,026 is: 22,060.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.96 : 25,311.30 = 16,026 : x
  2. Step 2: Convert to fraction form
    18,387.96/25,311.30 = 16,026/x
  3. Step 3: Cross multiply
    18,387.96x = 25,311.30 × 16,026
  4. Step 4: Simplify right side
    18,387.96x = 405,638,893.80
  5. Step 5: Solve for x
    x = 405,638,893.80/18,387.96
  6. Step 6: Final answer
    x = 22,060.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.