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Finding the Fourth Proportional to 354,524.58, 531,786.60 and 105,206.58

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Solution

The fourth proportional to 354,524.58, 531,786.60 and 105,206.58 is: 157,809.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,524.58 : 531,786.60 = 105,206.58 : x
  2. Step 2: Convert to fraction form
    354,524.58/531,786.60 = 105,206.58/x
  3. Step 3: Cross multiply
    354,524.58x = 531,786.60 × 105,206.58
  4. Step 4: Simplify right side
    354,524.58x = 55,947,449,475.83
  5. Step 5: Solve for x
    x = 55,947,449,475.83/354,524.58
  6. Step 6: Final answer
    x = 157,809.79

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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.