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Finding the Fourth Proportional to 69,093.69, 103,474.44 and 39,421.58

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Solution

The fourth proportional to 69,093.69, 103,474.44 and 39,421.58 is: 59,037.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,093.69 : 103,474.44 = 39,421.58 : x
  2. Step 2: Convert to fraction form
    69,093.69/103,474.44 = 39,421.58/x
  3. Step 3: Cross multiply
    69,093.69x = 103,474.44 × 39,421.58
  4. Step 4: Simplify right side
    69,093.69x = 4,079,125,397.04
  5. Step 5: Solve for x
    x = 4,079,125,397.04/69,093.69
  6. Step 6: Final answer
    x = 59,037.60

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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.