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Finding the Fourth Proportional to 69,339.53, 104,081.09 and 42,704.71

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Solution

The fourth proportional to 69,339.53, 104,081.09 and 42,704.71 is: 64,101.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,339.53 : 104,081.09 = 42,704.71 : x
  2. Step 2: Convert to fraction form
    69,339.53/104,081.09 = 42,704.71/x
  3. Step 3: Cross multiply
    69,339.53x = 104,081.09 × 42,704.71
  4. Step 4: Simplify right side
    69,339.53x = 4,444,752,291.21
  5. Step 5: Solve for x
    x = 4,444,752,291.21/69,339.53
  6. Step 6: Final answer
    x = 64,101.27

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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.