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Finding the Fourth Proportional to 110,936.40, 166,404.60 and 108,020.40

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Solution

The fourth proportional to 110,936.40, 166,404.60 and 108,020.40 is: 162,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,936.40 : 166,404.60 = 108,020.40 : x
  2. Step 2: Convert to fraction form
    110,936.40/166,404.60 = 108,020.40/x
  3. Step 3: Cross multiply
    110,936.40x = 166,404.60 × 108,020.40
  4. Step 4: Simplify right side
    110,936.40x = 17,975,091,453.84
  5. Step 5: Solve for x
    x = 17,975,091,453.84/110,936.40
  6. Step 6: Final answer
    x = 162,030.60

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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.