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Finding the Fourth Proportional to 263,185.10, 394,830.96 and 85,644.44

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Solution

The fourth proportional to 263,185.10, 394,830.96 and 85,644.44 is: 128,484.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,185.10 : 394,830.96 = 85,644.44 : x
  2. Step 2: Convert to fraction form
    263,185.10/394,830.96 = 85,644.44/x
  3. Step 3: Cross multiply
    263,185.10x = 394,830.96 × 85,644.44
  4. Step 4: Simplify right side
    263,185.10x = 33,815,075,649.16
  5. Step 5: Solve for x
    x = 33,815,075,649.16/263,185.10
  6. Step 6: Final answer
    x = 128,484.01

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1.5x scale

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.