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Finding the Fourth Proportional to 179,076.80, 268,615.20 and 132,420.80

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Solution

The fourth proportional to 179,076.80, 268,615.20 and 132,420.80 is: 198,631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,076.80 : 268,615.20 = 132,420.80 : x
  2. Step 2: Convert to fraction form
    179,076.80/268,615.20 = 132,420.80/x
  3. Step 3: Cross multiply
    179,076.80x = 268,615.20 × 132,420.80
  4. Step 4: Simplify right side
    179,076.80x = 35,570,239,676.16
  5. Step 5: Solve for x
    x = 35,570,239,676.16/179,076.80
  6. Step 6: Final answer
    x = 198,631.20

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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.