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Finding the Fourth Proportional to 84,012.90, 115,936.89 and 48,208.52

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Solution

The fourth proportional to 84,012.90, 115,936.89 and 48,208.52 is: 66,527.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,012.90 : 115,936.89 = 48,208.52 : x
  2. Step 2: Convert to fraction form
    84,012.90/115,936.89 = 48,208.52/x
  3. Step 3: Cross multiply
    84,012.90x = 115,936.89 × 48,208.52
  4. Step 4: Simplify right side
    84,012.90x = 5,589,145,743.98
  5. Step 5: Solve for x
    x = 5,589,145,743.98/84,012.90
  6. Step 6: Final answer
    x = 66,527.24

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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.