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Finding the Fourth Proportional to 219,628.57, 329,448.26 and 61,855.96

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Solution

The fourth proportional to 219,628.57, 329,448.26 and 61,855.96 is: 92,785.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,628.57 : 329,448.26 = 61,855.96 : x
  2. Step 2: Convert to fraction form
    219,628.57/329,448.26 = 61,855.96/x
  3. Step 3: Cross multiply
    219,628.57x = 329,448.26 × 61,855.96
  4. Step 4: Simplify right side
    219,628.57x = 20,378,338,083.35
  5. Step 5: Solve for x
    x = 20,378,338,083.35/219,628.57
  6. Step 6: Final answer
    x = 92,785.46

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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.