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Finding the Fourth Proportional to 133,980.56, 184,855.32 and 86,261.52

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Solution

The fourth proportional to 133,980.56, 184,855.32 and 86,261.52 is: 119,016.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,980.56 : 184,855.32 = 86,261.52 : x
  2. Step 2: Convert to fraction form
    133,980.56/184,855.32 = 86,261.52/x
  3. Step 3: Cross multiply
    133,980.56x = 184,855.32 × 86,261.52
  4. Step 4: Simplify right side
    133,980.56x = 15,945,900,883.29
  5. Step 5: Solve for x
    x = 15,945,900,883.29/133,980.56
  6. Step 6: Final answer
    x = 119,016.53

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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.