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Finding the Fourth Proportional to 122,523.50, 169,091.42 and 68,811.68

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Solution

The fourth proportional to 122,523.50, 169,091.42 and 68,811.68 is: 94,965.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,523.50 : 169,091.42 = 68,811.68 : x
  2. Step 2: Convert to fraction form
    122,523.50/169,091.42 = 68,811.68/x
  3. Step 3: Cross multiply
    122,523.50x = 169,091.42 × 68,811.68
  4. Step 4: Simplify right side
    122,523.50x = 11,635,464,762.46
  5. Step 5: Solve for x
    x = 11,635,464,762.46/122,523.50
  6. Step 6: Final answer
    x = 94,965.17

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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.