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Finding the Fourth Proportional to 89,797.20, 123,895.88 and 51,034.48

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Solution

The fourth proportional to 89,797.20, 123,895.88 and 51,034.48 is: 70,413.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,797.20 : 123,895.88 = 51,034.48 : x
  2. Step 2: Convert to fraction form
    89,797.20/123,895.88 = 51,034.48/x
  3. Step 3: Cross multiply
    89,797.20x = 123,895.88 × 51,034.48
  4. Step 4: Simplify right side
    89,797.20x = 6,322,961,809.94
  5. Step 5: Solve for x
    x = 6,322,961,809.94/89,797.20
  6. Step 6: Final answer
    x = 70,413.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.