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Finding the Fourth Proportional to 350,986.75, 484,361.75 and 189,841.81

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Solution

The fourth proportional to 350,986.75, 484,361.75 and 189,841.81 is: 261,981.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,986.75 : 484,361.75 = 189,841.81 : x
  2. Step 2: Convert to fraction form
    350,986.75/484,361.75 = 189,841.81/x
  3. Step 3: Cross multiply
    350,986.75x = 484,361.75 × 189,841.81
  4. Step 4: Simplify right side
    350,986.75x = 91,952,111,314.77
  5. Step 5: Solve for x
    x = 91,952,111,314.77/350,986.75
  6. Step 6: Final answer
    x = 261,981.72

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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.