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Finding the Fourth Proportional to 219,747.50, 329,425.76 and 79,474.94

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Solution

The fourth proportional to 219,747.50, 329,425.76 and 79,474.94 is: 119,141.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,747.50 : 329,425.76 = 79,474.94 : x
  2. Step 2: Convert to fraction form
    219,747.50/329,425.76 = 79,474.94/x
  3. Step 3: Cross multiply
    219,747.50x = 329,425.76 × 79,474.94
  4. Step 4: Simplify right side
    219,747.50x = 26,181,092,510.45
  5. Step 5: Solve for x
    x = 26,181,092,510.45/219,747.50
  6. Step 6: Final answer
    x = 119,141.71

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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.