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Finding the Fourth Proportional to 175,965.20, 263,947.80 and 82,653.20

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Solution

The fourth proportional to 175,965.20, 263,947.80 and 82,653.20 is: 123,979.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,965.20 : 263,947.80 = 82,653.20 : x
  2. Step 2: Convert to fraction form
    175,965.20/263,947.80 = 82,653.20/x
  3. Step 3: Cross multiply
    175,965.20x = 263,947.80 × 82,653.20
  4. Step 4: Simplify right side
    175,965.20x = 21,816,130,302.96
  5. Step 5: Solve for x
    x = 21,816,130,302.96/175,965.20
  6. Step 6: Final answer
    x = 123,979.80

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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.