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Finding the Fourth Proportional to 122,608.44, 169,194.25 and 71,625.89

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Solution

The fourth proportional to 122,608.44, 169,194.25 and 71,625.89 is: 98,840.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,608.44 : 169,194.25 = 71,625.89 : x
  2. Step 2: Convert to fraction form
    122,608.44/169,194.25 = 71,625.89/x
  3. Step 3: Cross multiply
    122,608.44x = 169,194.25 × 71,625.89
  4. Step 4: Simplify right side
    122,608.44x = 12,118,688,739.13
  5. Step 5: Solve for x
    x = 12,118,688,739.13/122,608.44
  6. Step 6: Final answer
    x = 98,840.58

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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.