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Finding the Fourth Proportional to 115,241.54, 172,927.91 and 92,015.60

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Solution

The fourth proportional to 115,241.54, 172,927.91 and 92,015.60 is: 138,075.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,241.54 : 172,927.91 = 92,015.60 : x
  2. Step 2: Convert to fraction form
    115,241.54/172,927.91 = 92,015.60/x
  3. Step 3: Cross multiply
    115,241.54x = 172,927.91 × 92,015.60
  4. Step 4: Simplify right side
    115,241.54x = 15,912,064,760.80
  5. Step 5: Solve for x
    x = 15,912,064,760.80/115,241.54
  6. Step 6: Final answer
    x = 138,075.78

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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.