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Finding the Fourth Proportional to 66,236.44, 91,360.02 and 44,978.80

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Solution

The fourth proportional to 66,236.44, 91,360.02 and 44,978.80 is: 62,039.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,236.44 : 91,360.02 = 44,978.80 : x
  2. Step 2: Convert to fraction form
    66,236.44/91,360.02 = 44,978.80/x
  3. Step 3: Cross multiply
    66,236.44x = 91,360.02 × 44,978.80
  4. Step 4: Simplify right side
    66,236.44x = 4,109,264,067.58
  5. Step 5: Solve for x
    x = 4,109,264,067.58/66,236.44
  6. Step 6: Final answer
    x = 62,039.33

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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.