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Finding the Fourth Proportional to 618,956.08, 928,127.93 and 219,536.98

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Solution

The fourth proportional to 618,956.08, 928,127.93 and 219,536.98 is: 329,196.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,956.08 : 928,127.93 = 219,536.98 : x
  2. Step 2: Convert to fraction form
    618,956.08/928,127.93 = 219,536.98/x
  3. Step 3: Cross multiply
    618,956.08x = 928,127.93 × 219,536.98
  4. Step 4: Simplify right side
    618,956.08x = 203,758,399,387.85
  5. Step 5: Solve for x
    x = 203,758,399,387.85/618,956.08
  6. Step 6: Final answer
    x = 329,196.86

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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.