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Finding the Fourth Proportional to 699,793.56, 965,800.08 and 393,984.48

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Solution

The fourth proportional to 699,793.56, 965,800.08 and 393,984.48 is: 543,746.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,793.56 : 965,800.08 = 393,984.48 : x
  2. Step 2: Convert to fraction form
    699,793.56/965,800.08 = 393,984.48/x
  3. Step 3: Cross multiply
    699,793.56x = 965,800.08 × 393,984.48
  4. Step 4: Simplify right side
    699,793.56x = 380,510,242,302.76
  5. Step 5: Solve for x
    x = 380,510,242,302.76/699,793.56
  6. Step 6: Final answer
    x = 543,746.42

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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.