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Finding the Fourth Proportional to 475,884.43, 656,738.90 and 261,033.55

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Solution

The fourth proportional to 475,884.43, 656,738.90 and 261,033.55 is: 360,236.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,884.43 : 656,738.90 = 261,033.55 : x
  2. Step 2: Convert to fraction form
    475,884.43/656,738.90 = 261,033.55/x
  3. Step 3: Cross multiply
    475,884.43x = 656,738.90 × 261,033.55
  4. Step 4: Simplify right side
    475,884.43x = 171,430,886,490.10
  5. Step 5: Solve for x
    x = 171,430,886,490.10/475,884.43
  6. Step 6: Final answer
    x = 360,236.38

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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.