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Finding the Fourth Proportional to 114,990.87, 172,474.18 and 30,759.54

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Solution

The fourth proportional to 114,990.87, 172,474.18 and 30,759.54 is: 46,136.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,990.87 : 172,474.18 = 30,759.54 : x
  2. Step 2: Convert to fraction form
    114,990.87/172,474.18 = 30,759.54/x
  3. Step 3: Cross multiply
    114,990.87x = 172,474.18 × 30,759.54
  4. Step 4: Simplify right side
    114,990.87x = 5,305,226,200.08
  5. Step 5: Solve for x
    x = 5,305,226,200.08/114,990.87
  6. Step 6: Final answer
    x = 46,136.06

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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.