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Finding the Fourth Proportional to 69,268.64, 103,915.20 and 22,513.28

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Solution

The fourth proportional to 69,268.64, 103,915.20 and 22,513.28 is: 33,773.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,268.64 : 103,915.20 = 22,513.28 : x
  2. Step 2: Convert to fraction form
    69,268.64/103,915.20 = 22,513.28/x
  3. Step 3: Cross multiply
    69,268.64x = 103,915.20 × 22,513.28
  4. Step 4: Simplify right side
    69,268.64x = 2,339,471,993.86
  5. Step 5: Solve for x
    x = 2,339,471,993.86/69,268.64
  6. Step 6: Final answer
    x = 33,773.90

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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.