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Finding the Fourth Proportional to 111,958.75, 154,508.07 and 66,020.23

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Solution

The fourth proportional to 111,958.75, 154,508.07 and 66,020.23 is: 91,110.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,958.75 : 154,508.07 = 66,020.23 : x
  2. Step 2: Convert to fraction form
    111,958.75/154,508.07 = 66,020.23/x
  3. Step 3: Cross multiply
    111,958.75x = 154,508.07 × 66,020.23
  4. Step 4: Simplify right side
    111,958.75x = 10,200,657,988.15
  5. Step 5: Solve for x
    x = 10,200,657,988.15/111,958.75
  6. Step 6: Final answer
    x = 91,110.86

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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.