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Finding the Fourth Proportional to 115,112.88, 172,692.74 and 48,553.25

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Solution

The fourth proportional to 115,112.88, 172,692.74 and 48,553.25 is: 72,839.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,112.88 : 172,692.74 = 48,553.25 : x
  2. Step 2: Convert to fraction form
    115,112.88/172,692.74 = 48,553.25/x
  3. Step 3: Cross multiply
    115,112.88x = 172,692.74 × 48,553.25
  4. Step 4: Simplify right side
    115,112.88x = 8,384,793,036.32
  5. Step 5: Solve for x
    x = 8,384,793,036.32/115,112.88
  6. Step 6: Final answer
    x = 72,839.75

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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.