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Finding the Fourth Proportional to 219,081.62, 328,609.47 and 61,306.58

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Solution

The fourth proportional to 219,081.62, 328,609.47 and 61,306.58 is: 91,956.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,081.62 : 328,609.47 = 61,306.58 : x
  2. Step 2: Convert to fraction form
    219,081.62/328,609.47 = 61,306.58/x
  3. Step 3: Cross multiply
    219,081.62x = 328,609.47 × 61,306.58
  4. Step 4: Simplify right side
    219,081.62x = 20,145,922,761.31
  5. Step 5: Solve for x
    x = 20,145,922,761.31/219,081.62
  6. Step 6: Final answer
    x = 91,956.24

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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.