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Finding the Fourth Proportional to 76,463.67, 105,619.10 and 58,203.44

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Solution

The fourth proportional to 76,463.67, 105,619.10 and 58,203.44 is: 80,396.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,463.67 : 105,619.10 = 58,203.44 : x
  2. Step 2: Convert to fraction form
    76,463.67/105,619.10 = 58,203.44/x
  3. Step 3: Cross multiply
    76,463.67x = 105,619.10 × 58,203.44
  4. Step 4: Simplify right side
    76,463.67x = 6,147,394,130.59
  5. Step 5: Solve for x
    x = 6,147,394,130.59/76,463.67
  6. Step 6: Final answer
    x = 80,396.27

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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.