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Finding the Fourth Proportional to 122,544.73, 183,686.41 and 69,840.73

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Solution

The fourth proportional to 122,544.73, 183,686.41 and 69,840.73 is: 104,686.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,544.73 : 183,686.41 = 69,840.73 : x
  2. Step 2: Convert to fraction form
    122,544.73/183,686.41 = 69,840.73/x
  3. Step 3: Cross multiply
    122,544.73x = 183,686.41 × 69,840.73
  4. Step 4: Simplify right side
    122,544.73x = 12,828,792,965.48
  5. Step 5: Solve for x
    x = 12,828,792,965.48/122,544.73
  6. Step 6: Final answer
    x = 104,686.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.