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Finding the Fourth Proportional to 698,763.98, 964,173.90 and 392,797.96

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Solution

The fourth proportional to 698,763.98, 964,173.90 and 392,797.96 is: 541,993.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,763.98 : 964,173.90 = 392,797.96 : x
  2. Step 2: Convert to fraction form
    698,763.98/964,173.90 = 392,797.96/x
  3. Step 3: Cross multiply
    698,763.98x = 964,173.90 × 392,797.96
  4. Step 4: Simplify right side
    698,763.98x = 378,725,541,005.24
  5. Step 5: Solve for x
    x = 378,725,541,005.24/698,763.98
  6. Step 6: Final answer
    x = 541,993.51

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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.