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Finding the Fourth Proportional to 263,070.01, 394,608.66 and 85,577.95

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Solution

The fourth proportional to 263,070.01, 394,608.66 and 85,577.95 is: 128,368.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,070.01 : 394,608.66 = 85,577.95 : x
  2. Step 2: Convert to fraction form
    263,070.01/394,608.66 = 85,577.95/x
  3. Step 3: Cross multiply
    263,070.01x = 394,608.66 × 85,577.95
  4. Step 4: Simplify right side
    263,070.01x = 33,769,800,175.05
  5. Step 5: Solve for x
    x = 33,769,800,175.05/263,070.01
  6. Step 6: Final answer
    x = 128,368.11

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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.