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Finding the Fourth Proportional to 122,526.52, 169,087.28 and 68,078.77

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Solution

The fourth proportional to 122,526.52, 169,087.28 and 68,078.77 is: 93,949.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,526.52 : 169,087.28 = 68,078.77 : x
  2. Step 2: Convert to fraction form
    122,526.52/169,087.28 = 68,078.77/x
  3. Step 3: Cross multiply
    122,526.52x = 169,087.28 × 68,078.77
  4. Step 4: Simplify right side
    122,526.52x = 11,511,253,283.49
  5. Step 5: Solve for x
    x = 11,511,253,283.49/122,526.52
  6. Step 6: Final answer
    x = 93,949.07

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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.