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Finding the Fourth Proportional to 69,920.83, 104,880.21 and 17,329.96

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Solution

The fourth proportional to 69,920.83, 104,880.21 and 17,329.96 is: 25,994.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,920.83 : 104,880.21 = 17,329.96 : x
  2. Step 2: Convert to fraction form
    69,920.83/104,880.21 = 17,329.96/x
  3. Step 3: Cross multiply
    69,920.83x = 104,880.21 × 17,329.96
  4. Step 4: Simplify right side
    69,920.83x = 1,817,569,844.09
  5. Step 5: Solve for x
    x = 1,817,569,844.09/69,920.83
  6. Step 6: Final answer
    x = 25,994.68

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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.