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Finding the Fourth Proportional to 353,153.70, 487,361.91 and 192,019.77

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Solution

The fourth proportional to 353,153.70, 487,361.91 and 192,019.77 is: 264,992.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,153.70 : 487,361.91 = 192,019.77 : x
  2. Step 2: Convert to fraction form
    353,153.70/487,361.91 = 192,019.77/x
  3. Step 3: Cross multiply
    353,153.70x = 487,361.91 × 192,019.77
  4. Step 4: Simplify right side
    353,153.70x = 93,583,121,864.96
  5. Step 5: Solve for x
    x = 93,583,121,864.96/353,153.70
  6. Step 6: Final answer
    x = 264,992.61

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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.