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Finding the Fourth Proportional to 201,930.80, 302,896.20 and 61,671.20

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Solution

The fourth proportional to 201,930.80, 302,896.20 and 61,671.20 is: 92,506.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,930.80 : 302,896.20 = 61,671.20 : x
  2. Step 2: Convert to fraction form
    201,930.80/302,896.20 = 61,671.20/x
  3. Step 3: Cross multiply
    201,930.80x = 302,896.20 × 61,671.20
  4. Step 4: Simplify right side
    201,930.80x = 18,679,972,129.44
  5. Step 5: Solve for x
    x = 18,679,972,129.44/201,930.80
  6. Step 6: Final answer
    x = 92,506.80

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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.