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Finding the Fourth Proportional to 69,276.99, 103,911.75 and 27,164.64

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Solution

The fourth proportional to 69,276.99, 103,911.75 and 27,164.64 is: 40,745.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,276.99 : 103,911.75 = 27,164.64 : x
  2. Step 2: Convert to fraction form
    69,276.99/103,911.75 = 27,164.64/x
  3. Step 3: Cross multiply
    69,276.99x = 103,911.75 × 27,164.64
  4. Step 4: Simplify right side
    69,276.99x = 2,822,725,280.52
  5. Step 5: Solve for x
    x = 2,822,725,280.52/69,276.99
  6. Step 6: Final answer
    x = 40,745.50

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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.