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Finding the Fourth Proportional to 123,058.80, 184,442.40 and 91,857.60

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Solution

The fourth proportional to 123,058.80, 184,442.40 and 91,857.60 is: 137,677.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,058.80 : 184,442.40 = 91,857.60 : x
  2. Step 2: Convert to fraction form
    123,058.80/184,442.40 = 91,857.60/x
  3. Step 3: Cross multiply
    123,058.80x = 184,442.40 × 91,857.60
  4. Step 4: Simplify right side
    123,058.80x = 16,942,436,202.24
  5. Step 5: Solve for x
    x = 16,942,436,202.24/123,058.80
  6. Step 6: Final answer
    x = 137,677.57

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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.