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Finding the Fourth Proportional to 82,912.98, 124,393.65 and 26,751.90

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Solution

The fourth proportional to 82,912.98, 124,393.65 and 26,751.90 is: 40,135.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,912.98 : 124,393.65 = 26,751.90 : x
  2. Step 2: Convert to fraction form
    82,912.98/124,393.65 = 26,751.90/x
  3. Step 3: Cross multiply
    82,912.98x = 124,393.65 × 26,751.90
  4. Step 4: Simplify right side
    82,912.98x = 3,327,766,485.44
  5. Step 5: Solve for x
    x = 3,327,766,485.44/82,912.98
  6. Step 6: Final answer
    x = 40,135.65

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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.