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Finding the Fourth Proportional to 111,998.80, 167,998.20 and 92,299.60

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Solution

The fourth proportional to 111,998.80, 167,998.20 and 92,299.60 is: 138,449.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,998.80 : 167,998.20 = 92,299.60 : x
  2. Step 2: Convert to fraction form
    111,998.80/167,998.20 = 92,299.60/x
  3. Step 3: Cross multiply
    111,998.80x = 167,998.20 × 92,299.60
  4. Step 4: Simplify right side
    111,998.80x = 15,506,166,660.72
  5. Step 5: Solve for x
    x = 15,506,166,660.72/111,998.80
  6. Step 6: Final answer
    x = 138,449.40

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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.