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Finding the Fourth Proportional to 193,615.20, 290,289.60 and 98,661.60

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Solution

The fourth proportional to 193,615.20, 290,289.60 and 98,661.60 is: 147,924.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,615.20 : 290,289.60 = 98,661.60 : x
  2. Step 2: Convert to fraction form
    193,615.20/290,289.60 = 98,661.60/x
  3. Step 3: Cross multiply
    193,615.20x = 290,289.60 × 98,661.60
  4. Step 4: Simplify right side
    193,615.20x = 28,640,436,399.36
  5. Step 5: Solve for x
    x = 28,640,436,399.36/193,615.20
  6. Step 6: Final answer
    x = 147,924.52

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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.