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Finding the Fourth Proportional to 633,409.10, 874,118.73 and 361,471.58

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Solution

The fourth proportional to 633,409.10, 874,118.73 and 361,471.58 is: 498,838.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,409.10 : 874,118.73 = 361,471.58 : x
  2. Step 2: Convert to fraction form
    633,409.10/874,118.73 = 361,471.58/x
  3. Step 3: Cross multiply
    633,409.10x = 874,118.73 × 361,471.58
  4. Step 4: Simplify right side
    633,409.10x = 315,969,078,440.69
  5. Step 5: Solve for x
    x = 315,969,078,440.69/633,409.10
  6. Step 6: Final answer
    x = 498,838.87

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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.