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Finding the Fourth Proportional to 263,490.96, 395,299.42 and 85,998.30

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Solution

The fourth proportional to 263,490.96, 395,299.42 and 85,998.30 is: 129,018.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,490.96 : 395,299.42 = 85,998.30 : x
  2. Step 2: Convert to fraction form
    263,490.96/395,299.42 = 85,998.30/x
  3. Step 3: Cross multiply
    263,490.96x = 395,299.42 × 85,998.30
  4. Step 4: Simplify right side
    263,490.96x = 33,995,078,110.99
  5. Step 5: Solve for x
    x = 33,995,078,110.99/263,490.96
  6. Step 6: Final answer
    x = 129,018.01

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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.