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Finding the Fourth Proportional to 263,885.60, 395,083.20 and 205,403.60

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Solution

The fourth proportional to 263,885.60, 395,083.20 and 205,403.60 is: 307,525.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,885.60 : 395,083.20 = 205,403.60 : x
  2. Step 2: Convert to fraction form
    263,885.60/395,083.20 = 205,403.60/x
  3. Step 3: Cross multiply
    263,885.60x = 395,083.20 × 205,403.60
  4. Step 4: Simplify right side
    263,885.60x = 81,151,511,579.52
  5. Step 5: Solve for x
    x = 81,151,511,579.52/263,885.60
  6. Step 6: Final answer
    x = 307,525.35

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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.