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Finding the Fourth Proportional to 122,525.20, 183,544.80 and 107,912.80

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Solution

The fourth proportional to 122,525.20, 183,544.80 and 107,912.80 is: 161,655.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,525.20 : 183,544.80 = 107,912.80 : x
  2. Step 2: Convert to fraction form
    122,525.20/183,544.80 = 107,912.80/x
  3. Step 3: Cross multiply
    122,525.20x = 183,544.80 × 107,912.80
  4. Step 4: Simplify right side
    122,525.20x = 19,806,833,293.44
  5. Step 5: Solve for x
    x = 19,806,833,293.44/122,525.20
  6. Step 6: Final answer
    x = 161,655.18

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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.