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Finding the Fourth Proportional to 122,543.73, 183,684.92 and 69,839.73

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Solution

The fourth proportional to 122,543.73, 183,684.92 and 69,839.73 is: 104,685.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,543.73 : 183,684.92 = 69,839.73 : x
  2. Step 2: Convert to fraction form
    122,543.73/183,684.92 = 69,839.73/x
  3. Step 3: Cross multiply
    122,543.73x = 183,684.92 × 69,839.73
  4. Step 4: Simplify right side
    122,543.73x = 12,828,504,868.67
  5. Step 5: Solve for x
    x = 12,828,504,868.67/122,543.73
  6. Step 6: Final answer
    x = 104,685.12

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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.