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Finding the Fourth Proportional to 499,650.56, 689,584.50 and 281,903.94

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Solution

The fourth proportional to 499,650.56, 689,584.50 and 281,903.94 is: 389,065.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,650.56 : 689,584.50 = 281,903.94 : x
  2. Step 2: Convert to fraction form
    499,650.56/689,584.50 = 281,903.94/x
  3. Step 3: Cross multiply
    499,650.56x = 689,584.50 × 281,903.94
  4. Step 4: Simplify right side
    499,650.56x = 194,396,587,512.93
  5. Step 5: Solve for x
    x = 194,396,587,512.93/499,650.56
  6. Step 6: Final answer
    x = 389,065.08

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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.