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Finding the Fourth Proportional to 122,761.56, 169,425.42 and 69,048.60

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Solution

The fourth proportional to 122,761.56, 169,425.42 and 69,048.60 is: 95,295.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,761.56 : 169,425.42 = 69,048.60 : x
  2. Step 2: Convert to fraction form
    122,761.56/169,425.42 = 69,048.60/x
  3. Step 3: Cross multiply
    122,761.56x = 169,425.42 × 69,048.60
  4. Step 4: Simplify right side
    122,761.56x = 11,698,588,055.41
  5. Step 5: Solve for x
    x = 11,698,588,055.41/122,761.56
  6. Step 6: Final answer
    x = 95,295.21

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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.