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Finding the Fourth Proportional to 122,968.25, 169,696.69 and 69,254.15

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Solution

The fourth proportional to 122,968.25, 169,696.69 and 69,254.15 is: 95,571.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,968.25 : 169,696.69 = 69,254.15 : x
  2. Step 2: Convert to fraction form
    122,968.25/169,696.69 = 69,254.15/x
  3. Step 3: Cross multiply
    122,968.25x = 169,696.69 × 69,254.15
  4. Step 4: Simplify right side
    122,968.25x = 11,752,200,274.87
  5. Step 5: Solve for x
    x = 11,752,200,274.87/122,968.25
  6. Step 6: Final answer
    x = 95,571.02

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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.