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Finding the Fourth Proportional to 618,997.56, 928,518.34 and 198,218.76

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Solution

The fourth proportional to 618,997.56, 928,518.34 and 198,218.76 is: 297,335.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,997.56 : 928,518.34 = 198,218.76 : x
  2. Step 2: Convert to fraction form
    618,997.56/928,518.34 = 198,218.76/x
  3. Step 3: Cross multiply
    618,997.56x = 928,518.34 × 198,218.76
  4. Step 4: Simplify right side
    618,997.56x = 184,049,753,992.06
  5. Step 5: Solve for x
    x = 184,049,753,992.06/618,997.56
  6. Step 6: Final answer
    x = 297,335.18

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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.