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Finding the Fourth Proportional to 80,792.81, 121,296.57 and 69,022.22

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Solution

The fourth proportional to 80,792.81, 121,296.57 and 69,022.22 is: 103,625.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,792.81 : 121,296.57 = 69,022.22 : x
  2. Step 2: Convert to fraction form
    80,792.81/121,296.57 = 69,022.22/x
  3. Step 3: Cross multiply
    80,792.81x = 121,296.57 × 69,022.22
  4. Step 4: Simplify right side
    80,792.81x = 8,372,158,194.67
  5. Step 5: Solve for x
    x = 8,372,158,194.67/80,792.81
  6. Step 6: Final answer
    x = 103,625.05

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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.