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Finding the Fourth Proportional to 633,626.88, 874,429.20 and 361,739.04

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Solution

The fourth proportional to 633,626.88, 874,429.20 and 361,739.04 is: 499,213.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,626.88 : 874,429.20 = 361,739.04 : x
  2. Step 2: Convert to fraction form
    633,626.88/874,429.20 = 361,739.04/x
  3. Step 3: Cross multiply
    633,626.88x = 874,429.20 × 361,739.04
  4. Step 4: Simplify right side
    633,626.88x = 316,315,179,355.97
  5. Step 5: Solve for x
    x = 316,315,179,355.97/633,626.88
  6. Step 6: Final answer
    x = 499,213.64

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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.