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Finding the Fourth Proportional to 111,896.78, 154,420.78 and 60,912.80

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Solution

The fourth proportional to 111,896.78, 154,420.78 and 60,912.80 is: 84,061.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,896.78 : 154,420.78 = 60,912.80 : x
  2. Step 2: Convert to fraction form
    111,896.78/154,420.78 = 60,912.80/x
  3. Step 3: Cross multiply
    111,896.78x = 154,420.78 × 60,912.80
  4. Step 4: Simplify right side
    111,896.78x = 9,406,202,087.98
  5. Step 5: Solve for x
    x = 9,406,202,087.98/111,896.78
  6. Step 6: Final answer
    x = 84,061.42

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1.5x scale

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.