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Finding the Fourth Proportional to 618,992.55, 928,510.83 and 198,213.75

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Solution

The fourth proportional to 618,992.55, 928,510.83 and 198,213.75 is: 297,327.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,992.55 : 928,510.83 = 198,213.75 : x
  2. Step 2: Convert to fraction form
    618,992.55/928,510.83 = 198,213.75/x
  3. Step 3: Cross multiply
    618,992.55x = 928,510.83 × 198,213.75
  4. Step 4: Simplify right side
    618,992.55x = 184,043,613,529.91
  5. Step 5: Solve for x
    x = 184,043,613,529.91/618,992.55
  6. Step 6: Final answer
    x = 297,327.67

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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.