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Finding the Fourth Proportional to 79,512.01, 109,728.67 and 43,702.98

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Solution

The fourth proportional to 79,512.01, 109,728.67 and 43,702.98 is: 60,311.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,512.01 : 109,728.67 = 43,702.98 : x
  2. Step 2: Convert to fraction form
    79,512.01/109,728.67 = 43,702.98/x
  3. Step 3: Cross multiply
    79,512.01x = 109,728.67 × 43,702.98
  4. Step 4: Simplify right side
    79,512.01x = 4,795,469,870.44
  5. Step 5: Solve for x
    x = 4,795,469,870.44/79,512.01
  6. Step 6: Final answer
    x = 60,311.26

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1.5x scale

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.