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Finding the Fourth Proportional to 288,589.70, 398,137.34 and 191,840.34

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Solution

The fourth proportional to 288,589.70, 398,137.34 and 191,840.34 is: 264,662.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,589.70 : 398,137.34 = 191,840.34 : x
  2. Step 2: Convert to fraction form
    288,589.70/398,137.34 = 191,840.34/x
  3. Step 3: Cross multiply
    288,589.70x = 398,137.34 × 191,840.34
  4. Step 4: Simplify right side
    288,589.70x = 76,378,802,672.30
  5. Step 5: Solve for x
    x = 76,378,802,672.30/288,589.70
  6. Step 6: Final answer
    x = 264,662.26

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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.