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Finding the Fourth Proportional to 69,190.32, 103,748.36 and 21,796.56

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Solution

The fourth proportional to 69,190.32, 103,748.36 and 21,796.56 is: 32,683.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,190.32 : 103,748.36 = 21,796.56 : x
  2. Step 2: Convert to fraction form
    69,190.32/103,748.36 = 21,796.56/x
  3. Step 3: Cross multiply
    69,190.32x = 103,748.36 × 21,796.56
  4. Step 4: Simplify right side
    69,190.32x = 2,261,357,353.64
  5. Step 5: Solve for x
    x = 2,261,357,353.64/69,190.32
  6. Step 6: Final answer
    x = 32,683.15

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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.