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Finding the Fourth Proportional to 69,405.92, 104,151.71 and 27,278.60

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Solution

The fourth proportional to 69,405.92, 104,151.71 and 27,278.60 is: 40,934.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,405.92 : 104,151.71 = 27,278.60 : x
  2. Step 2: Convert to fraction form
    69,405.92/104,151.71 = 27,278.60/x
  3. Step 3: Cross multiply
    69,405.92x = 104,151.71 × 27,278.60
  4. Step 4: Simplify right side
    69,405.92x = 2,841,113,164.98
  5. Step 5: Solve for x
    x = 2,841,113,164.98/69,405.92
  6. Step 6: Final answer
    x = 40,934.74

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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.