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Finding the Fourth Proportional to 110,963.25, 166,486.80 and 66,620.94

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Solution

The fourth proportional to 110,963.25, 166,486.80 and 66,620.94 is: 99,956.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,963.25 : 166,486.80 = 66,620.94 : x
  2. Step 2: Convert to fraction form
    110,963.25/166,486.80 = 66,620.94/x
  3. Step 3: Cross multiply
    110,963.25x = 166,486.80 × 66,620.94
  4. Step 4: Simplify right side
    110,963.25x = 11,091,507,113.59
  5. Step 5: Solve for x
    x = 11,091,507,113.59/110,963.25
  6. Step 6: Final answer
    x = 99,956.58

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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.