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Finding the Fourth Proportional to 111,805.20, 167,610.60 and 67,384.80

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Solution

The fourth proportional to 111,805.20, 167,610.60 and 67,384.80 is: 101,018.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,805.20 : 167,610.60 = 67,384.80 : x
  2. Step 2: Convert to fraction form
    111,805.20/167,610.60 = 67,384.80/x
  3. Step 3: Cross multiply
    111,805.20x = 167,610.60 × 67,384.80
  4. Step 4: Simplify right side
    111,805.20x = 11,294,406,758.88
  5. Step 5: Solve for x
    x = 11,294,406,758.88/111,805.20
  6. Step 6: Final answer
    x = 101,018.62

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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.