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Finding the Fourth Proportional to 351,586.81, 485,189.58 and 190,441.47

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Solution

The fourth proportional to 351,586.81, 485,189.58 and 190,441.47 is: 262,809.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,586.81 : 485,189.58 = 190,441.47 : x
  2. Step 2: Convert to fraction form
    351,586.81/485,189.58 = 190,441.47/x
  3. Step 3: Cross multiply
    351,586.81x = 485,189.58 × 190,441.47
  4. Step 4: Simplify right side
    351,586.81x = 92,400,216,843.88
  5. Step 5: Solve for x
    x = 92,400,216,843.88/351,586.81
  6. Step 6: Final answer
    x = 262,809.11

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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.