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Finding the Fourth Proportional to 113,321.53, 156,383.87 and 63,020.53

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Solution

The fourth proportional to 113,321.53, 156,383.87 and 63,020.53 is: 86,968.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,321.53 : 156,383.87 = 63,020.53 : x
  2. Step 2: Convert to fraction form
    113,321.53/156,383.87 = 63,020.53/x
  3. Step 3: Cross multiply
    113,321.53x = 156,383.87 × 63,020.53
  4. Step 4: Simplify right side
    113,321.53x = 9,855,394,251.23
  5. Step 5: Solve for x
    x = 9,855,394,251.23/113,321.53
  6. Step 6: Final answer
    x = 86,968.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.