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Finding the Fourth Proportional to 18,534,793.80, 27,810,063.90 and 8,945,236.20

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Solution

The fourth proportional to 18,534,793.80, 27,810,063.90 and 8,945,236.20 is: 13,421,654.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,534,793.80 : 27,810,063.90 = 8,945,236.20 : x
  2. Step 2: Convert to fraction form
    18,534,793.80/27,810,063.90 = 8,945,236.20/x
  3. Step 3: Cross multiply
    18,534,793.80x = 27,810,063.90 × 8,945,236.20
  4. Step 4: Simplify right side
    18,534,793.80x = 248,767,590,322,593.16
  5. Step 5: Solve for x
    x = 248,767,590,322,593.16/18,534,793.80
  6. Step 6: Final answer
    x = 13,421,654.05

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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.