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Finding the Fourth Proportional to 235,936.40, 353,321.40 and 156,621.20

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Solution

The fourth proportional to 235,936.40, 353,321.40 and 156,621.20 is: 234,544.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,936.40 : 353,321.40 = 156,621.20 : x
  2. Step 2: Convert to fraction form
    235,936.40/353,321.40 = 156,621.20/x
  3. Step 3: Cross multiply
    235,936.40x = 353,321.40 × 156,621.20
  4. Step 4: Simplify right side
    235,936.40x = 55,337,621,653.68
  5. Step 5: Solve for x
    x = 55,337,621,653.68/235,936.40
  6. Step 6: Final answer
    x = 234,544.66

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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.