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Finding the Fourth Proportional to 18,694.01, 28,000.81 and 8,818.49

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Solution

The fourth proportional to 18,694.01, 28,000.81 and 8,818.49 is: 13,208.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.01 : 28,000.81 = 8,818.49 : x
  2. Step 2: Convert to fraction form
    18,694.01/28,000.81 = 8,818.49/x
  3. Step 3: Cross multiply
    18,694.01x = 28,000.81 × 8,818.49
  4. Step 4: Simplify right side
    18,694.01x = 246,924,862.98
  5. Step 5: Solve for x
    x = 246,924,862.98/18,694.01
  6. Step 6: Final answer
    x = 13,208.77

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1.5x scale

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.