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Finding the Fourth Proportional to 111,259.80, 167,019.30 and 66,936.60

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Solution

The fourth proportional to 111,259.80, 167,019.30 and 66,936.60 is: 100,482.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,259.80 : 167,019.30 = 66,936.60 : x
  2. Step 2: Convert to fraction form
    111,259.80/167,019.30 = 66,936.60/x
  3. Step 3: Cross multiply
    111,259.80x = 167,019.30 × 66,936.60
  4. Step 4: Simplify right side
    111,259.80x = 11,179,704,076.38
  5. Step 5: Solve for x
    x = 11,179,704,076.38/111,259.80
  6. Step 6: Final answer
    x = 100,482.87

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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.