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Finding the Fourth Proportional to 320,025.90, 441,617.49 and 191,109.90

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Solution

The fourth proportional to 320,025.90, 441,617.49 and 191,109.90 is: 263,720.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,025.90 : 441,617.49 = 191,109.90 : x
  2. Step 2: Convert to fraction form
    320,025.90/441,617.49 = 191,109.90/x
  3. Step 3: Cross multiply
    320,025.90x = 441,617.49 × 191,109.90
  4. Step 4: Simplify right side
    320,025.90x = 84,397,474,352.15
  5. Step 5: Solve for x
    x = 84,397,474,352.15/320,025.90
  6. Step 6: Final answer
    x = 263,720.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.