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Finding the Fourth Proportional to 122,794.53, 169,442.71 and 69,078.43

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Solution

The fourth proportional to 122,794.53, 169,442.71 and 69,078.43 is: 95,320.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,794.53 : 169,442.71 = 69,078.43 : x
  2. Step 2: Convert to fraction form
    122,794.53/169,442.71 = 69,078.43/x
  3. Step 3: Cross multiply
    122,794.53x = 169,442.71 × 69,078.43
  4. Step 4: Simplify right side
    122,794.53x = 11,704,836,381.75
  5. Step 5: Solve for x
    x = 11,704,836,381.75/122,794.53
  6. Step 6: Final answer
    x = 95,320.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.