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Finding the Fourth Proportional to 353,904.20, 531,893.10 and 347,683.40

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Solution

The fourth proportional to 353,904.20, 531,893.10 and 347,683.40 is: 522,543.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,904.20 : 531,893.10 = 347,683.40 : x
  2. Step 2: Convert to fraction form
    353,904.20/531,893.10 = 347,683.40/x
  3. Step 3: Cross multiply
    353,904.20x = 531,893.10 × 347,683.40
  4. Step 4: Simplify right side
    353,904.20x = 184,930,401,444.54
  5. Step 5: Solve for x
    x = 184,930,401,444.54/353,904.20
  6. Step 6: Final answer
    x = 522,543.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.