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Finding the Fourth Proportional to 125,961.75, 173,820.78 and 69,362.19

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Solution

The fourth proportional to 125,961.75, 173,820.78 and 69,362.19 is: 95,716.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,961.75 : 173,820.78 = 69,362.19 : x
  2. Step 2: Convert to fraction form
    125,961.75/173,820.78 = 69,362.19/x
  3. Step 3: Cross multiply
    125,961.75x = 173,820.78 × 69,362.19
  4. Step 4: Simplify right side
    125,961.75x = 12,056,589,968.31
  5. Step 5: Solve for x
    x = 12,056,589,968.31/125,961.75
  6. Step 6: Final answer
    x = 95,716.28

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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.