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Finding the Fourth Proportional to 633,389.36, 874,091.45 and 361,451.84

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Solution

The fourth proportional to 633,389.36, 874,091.45 and 361,451.84 is: 498,811.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,389.36 : 874,091.45 = 361,451.84 : x
  2. Step 2: Convert to fraction form
    633,389.36/874,091.45 = 361,451.84/x
  3. Step 3: Cross multiply
    633,389.36x = 874,091.45 × 361,451.84
  4. Step 4: Simplify right side
    633,389.36x = 315,941,959,463.94
  5. Step 5: Solve for x
    x = 315,941,959,463.94/633,389.36
  6. Step 6: Final answer
    x = 498,811.60

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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.