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Finding the Fourth Proportional to 111,805.70, 167,611.35 and 67,385.30

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Solution

The fourth proportional to 111,805.70, 167,611.35 and 67,385.30 is: 101,019.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,805.70 : 167,611.35 = 67,385.30 : x
  2. Step 2: Convert to fraction form
    111,805.70/167,611.35 = 67,385.30/x
  3. Step 3: Cross multiply
    111,805.70x = 167,611.35 × 67,385.30
  4. Step 4: Simplify right side
    111,805.70x = 11,294,541,103.16
  5. Step 5: Solve for x
    x = 11,294,541,103.16/111,805.70
  6. Step 6: Final answer
    x = 101,019.37

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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.