Home / 193,013.36-289,464.57-66,620.78

Finding the Fourth Proportional to 193,013.36, 289,464.57 and 66,620.78

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Solution

The fourth proportional to 193,013.36, 289,464.57 and 66,620.78 is: 99,912.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,013.36 : 289,464.57 = 66,620.78 : x
  2. Step 2: Convert to fraction form
    193,013.36/289,464.57 = 66,620.78/x
  3. Step 3: Cross multiply
    193,013.36x = 289,464.57 × 66,620.78
  4. Step 4: Simplify right side
    193,013.36x = 19,284,355,435.76
  5. Step 5: Solve for x
    x = 19,284,355,435.76/193,013.36
  6. Step 6: Final answer
    x = 99,912.02

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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.