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Finding the Fourth Proportional to 69,276.36, 103,932.24 and 19,356.60

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Solution

The fourth proportional to 69,276.36, 103,932.24 and 19,356.60 is: 29,039.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,276.36 : 103,932.24 = 19,356.60 : x
  2. Step 2: Convert to fraction form
    69,276.36/103,932.24 = 19,356.60/x
  3. Step 3: Cross multiply
    69,276.36x = 103,932.24 × 19,356.60
  4. Step 4: Simplify right side
    69,276.36x = 2,011,774,796.78
  5. Step 5: Solve for x
    x = 2,011,774,796.78/69,276.36
  6. Step 6: Final answer
    x = 29,039.85

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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.