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Finding the Fourth Proportional to 235,910.40, 353,635.20 and 211,027.20

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Solution

The fourth proportional to 235,910.40, 353,635.20 and 211,027.20 is: 316,334.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,910.40 : 353,635.20 = 211,027.20 : x
  2. Step 2: Convert to fraction form
    235,910.40/353,635.20 = 211,027.20/x
  3. Step 3: Cross multiply
    235,910.40x = 353,635.20 × 211,027.20
  4. Step 4: Simplify right side
    235,910.40x = 74,626,646,077.44
  5. Step 5: Solve for x
    x = 74,626,646,077.44/235,910.40
  6. Step 6: Final answer
    x = 316,334.70

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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.