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Finding the Fourth Proportional to 337,173, 505,759.50 and 87,855

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Solution

The fourth proportional to 337,173, 505,759.50 and 87,855 is: 131,782.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    337,173 : 505,759.50 = 87,855 : x
  2. Step 2: Convert to fraction form
    337,173/505,759.50 = 87,855/x
  3. Step 3: Cross multiply
    337,173x = 505,759.50 × 87,855
  4. Step 4: Simplify right side
    337,173x = 44,433,500,872.50
  5. Step 5: Solve for x
    x = 44,433,500,872.50/337,173
  6. Step 6: Final answer
    x = 131,782.50

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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.