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Finding the Fourth Proportional to 122,604.66, 169,193.88 and 68,156.46

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Solution

The fourth proportional to 122,604.66, 169,193.88 and 68,156.46 is: 94,055.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,604.66 : 169,193.88 = 68,156.46 : x
  2. Step 2: Convert to fraction form
    122,604.66/169,193.88 = 68,156.46/x
  3. Step 3: Cross multiply
    122,604.66x = 169,193.88 × 68,156.46
  4. Step 4: Simplify right side
    122,604.66x = 11,531,655,914.46
  5. Step 5: Solve for x
    x = 11,531,655,914.46/122,604.66
  6. Step 6: Final answer
    x = 94,055.61

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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.