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Finding the Fourth Proportional to 199,910.88, 275,890.32 and 115,048.80

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Solution

The fourth proportional to 199,910.88, 275,890.32 and 115,048.80 is: 158,775.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,910.88 : 275,890.32 = 115,048.80 : x
  2. Step 2: Convert to fraction form
    199,910.88/275,890.32 = 115,048.80/x
  3. Step 3: Cross multiply
    199,910.88x = 275,890.32 × 115,048.80
  4. Step 4: Simplify right side
    199,910.88x = 31,740,850,247.62
  5. Step 5: Solve for x
    x = 31,740,850,247.62/199,910.88
  6. Step 6: Final answer
    x = 158,775.00

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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.