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Finding the Fourth Proportional to 235,698.30, 353,550.78 and 67,218.66

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Solution

The fourth proportional to 235,698.30, 353,550.78 and 67,218.66 is: 100,828.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,698.30 : 353,550.78 = 67,218.66 : x
  2. Step 2: Convert to fraction form
    235,698.30/353,550.78 = 67,218.66/x
  3. Step 3: Cross multiply
    235,698.30x = 353,550.78 × 67,218.66
  4. Step 4: Simplify right side
    235,698.30x = 23,765,209,673.55
  5. Step 5: Solve for x
    x = 23,765,209,673.55/235,698.30
  6. Step 6: Final answer
    x = 100,828.94

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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.