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Finding the Fourth Proportional to 66,194.25, 91,345.38 and 35,978.87

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Solution

The fourth proportional to 66,194.25, 91,345.38 and 35,978.87 is: 49,649.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,194.25 : 91,345.38 = 35,978.87 : x
  2. Step 2: Convert to fraction form
    66,194.25/91,345.38 = 35,978.87/x
  3. Step 3: Cross multiply
    66,194.25x = 91,345.38 × 35,978.87
  4. Step 4: Simplify right side
    66,194.25x = 3,286,503,552.12
  5. Step 5: Solve for x
    x = 3,286,503,552.12/66,194.25
  6. Step 6: Final answer
    x = 49,649.38

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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.