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Finding the Fourth Proportional to 111,940.92, 154,474.80 and 66,608.46

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Solution

The fourth proportional to 111,940.92, 154,474.80 and 66,608.46 is: 91,917.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,940.92 : 154,474.80 = 66,608.46 : x
  2. Step 2: Convert to fraction form
    111,940.92/154,474.80 = 66,608.46/x
  3. Step 3: Cross multiply
    111,940.92x = 154,474.80 × 66,608.46
  4. Step 4: Simplify right side
    111,940.92x = 10,289,328,536.81
  5. Step 5: Solve for x
    x = 10,289,328,536.81/111,940.92
  6. Step 6: Final answer
    x = 91,917.49

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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.