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Finding the Fourth Proportional to 103,679.45, 155,519.18 and 33,609.05

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Solution

The fourth proportional to 103,679.45, 155,519.18 and 33,609.05 is: 50,413.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,679.45 : 155,519.18 = 33,609.05 : x
  2. Step 2: Convert to fraction form
    103,679.45/155,519.18 = 33,609.05/x
  3. Step 3: Cross multiply
    103,679.45x = 155,519.18 × 33,609.05
  4. Step 4: Simplify right side
    103,679.45x = 5,226,851,896.58
  5. Step 5: Solve for x
    x = 5,226,851,896.58/103,679.45
  6. Step 6: Final answer
    x = 50,413.58

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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.