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Finding the Fourth Proportional to 181,506.80, 271,612.20 and 114,978.80

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Solution

The fourth proportional to 181,506.80, 271,612.20 and 114,978.80 is: 172,057.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,506.80 : 271,612.20 = 114,978.80 : x
  2. Step 2: Convert to fraction form
    181,506.80/271,612.20 = 114,978.80/x
  3. Step 3: Cross multiply
    181,506.80x = 271,612.20 × 114,978.80
  4. Step 4: Simplify right side
    181,506.80x = 31,229,644,821.36
  5. Step 5: Solve for x
    x = 31,229,644,821.36/181,506.80
  6. Step 6: Final answer
    x = 172,057.71

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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.