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Finding the Fourth Proportional to 192,431.53, 265,568.51 and 111,858.80

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Solution

The fourth proportional to 192,431.53, 265,568.51 and 111,858.80 is: 154,372.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,431.53 : 265,568.51 = 111,858.80 : x
  2. Step 2: Convert to fraction form
    192,431.53/265,568.51 = 111,858.80/x
  3. Step 3: Cross multiply
    192,431.53x = 265,568.51 × 111,858.80
  4. Step 4: Simplify right side
    192,431.53x = 29,706,174,287.09
  5. Step 5: Solve for x
    x = 29,706,174,287.09/192,431.53
  6. Step 6: Final answer
    x = 154,372.70

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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.