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Finding the Fourth Proportional to 81,843.56, 113,007.66 and 63,907.46

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Solution

The fourth proportional to 81,843.56, 113,007.66 and 63,907.46 is: 88,241.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,843.56 : 113,007.66 = 63,907.46 : x
  2. Step 2: Convert to fraction form
    81,843.56/113,007.66 = 63,907.46/x
  3. Step 3: Cross multiply
    81,843.56x = 113,007.66 × 63,907.46
  4. Step 4: Simplify right side
    81,843.56x = 7,222,032,511.14
  5. Step 5: Solve for x
    x = 7,222,032,511.14/81,843.56
  6. Step 6: Final answer
    x = 88,241.92

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1.5x scale

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.