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Finding the Fourth Proportional to 111,211.60, 166,841.70 and 55,078.60

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Solution

The fourth proportional to 111,211.60, 166,841.70 and 55,078.60 is: 82,629.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,211.60 : 166,841.70 = 55,078.60 : x
  2. Step 2: Convert to fraction form
    111,211.60/166,841.70 = 55,078.60/x
  3. Step 3: Cross multiply
    111,211.60x = 166,841.70 × 55,078.60
  4. Step 4: Simplify right side
    111,211.60x = 9,189,407,257.62
  5. Step 5: Solve for x
    x = 9,189,407,257.62/111,211.60
  6. Step 6: Final answer
    x = 82,629.93

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1.5x scale

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.