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Finding the Fourth Proportional to 69,084.72, 103,611.60 and 26,965.80

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Solution

The fourth proportional to 69,084.72, 103,611.60 and 26,965.80 is: 40,442.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,084.72 : 103,611.60 = 26,965.80 : x
  2. Step 2: Convert to fraction form
    69,084.72/103,611.60 = 26,965.80/x
  3. Step 3: Cross multiply
    69,084.72x = 103,611.60 × 26,965.80
  4. Step 4: Simplify right side
    69,084.72x = 2,793,969,683.28
  5. Step 5: Solve for x
    x = 2,793,969,683.28/69,084.72
  6. Step 6: Final answer
    x = 40,442.66

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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.