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Finding the Fourth Proportional to 171,072.20, 256,632.60 and 52,731.20

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Solution

The fourth proportional to 171,072.20, 256,632.60 and 52,731.20 is: 79,104.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,072.20 : 256,632.60 = 52,731.20 : x
  2. Step 2: Convert to fraction form
    171,072.20/256,632.60 = 52,731.20/x
  3. Step 3: Cross multiply
    171,072.20x = 256,632.60 × 52,731.20
  4. Step 4: Simplify right side
    171,072.20x = 13,532,544,957.12
  5. Step 5: Solve for x
    x = 13,532,544,957.12/171,072.20
  6. Step 6: Final answer
    x = 79,104.29

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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.