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Finding the Fourth Proportional to 122,509.52, 169,047.78 and 68,794.37

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Solution

The fourth proportional to 122,509.52, 169,047.78 and 68,794.37 is: 94,927.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,509.52 : 169,047.78 = 68,794.37 : x
  2. Step 2: Convert to fraction form
    122,509.52/169,047.78 = 68,794.37/x
  3. Step 3: Cross multiply
    122,509.52x = 169,047.78 × 68,794.37
  4. Step 4: Simplify right side
    122,509.52x = 11,629,535,525.00
  5. Step 5: Solve for x
    x = 11,629,535,525.00/122,509.52
  6. Step 6: Final answer
    x = 94,927.61

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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.