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Finding the Fourth Proportional to 329,379.90, 494,075.28 and 92,728.26

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Solution

The fourth proportional to 329,379.90, 494,075.28 and 92,728.26 is: 139,093.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,379.90 : 494,075.28 = 92,728.26 : x
  2. Step 2: Convert to fraction form
    329,379.90/494,075.28 = 92,728.26/x
  3. Step 3: Cross multiply
    329,379.90x = 494,075.28 × 92,728.26
  4. Step 4: Simplify right side
    329,379.90x = 45,814,741,023.41
  5. Step 5: Solve for x
    x = 45,814,741,023.41/329,379.90
  6. Step 6: Final answer
    x = 139,093.92

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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.