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Finding the Fourth Proportional to 172,048.40, 258,072.60 and 132,682.40

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Solution

The fourth proportional to 172,048.40, 258,072.60 and 132,682.40 is: 199,023.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,048.40 : 258,072.60 = 132,682.40 : x
  2. Step 2: Convert to fraction form
    172,048.40/258,072.60 = 132,682.40/x
  3. Step 3: Cross multiply
    172,048.40x = 258,072.60 × 132,682.40
  4. Step 4: Simplify right side
    172,048.40x = 34,241,691,942.24
  5. Step 5: Solve for x
    x = 34,241,691,942.24/172,048.40
  6. Step 6: Final answer
    x = 199,023.60

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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.