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Finding the Fourth Proportional to 123,078.79, 184,619.66 and 34,326.90

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Solution

The fourth proportional to 123,078.79, 184,619.66 and 34,326.90 is: 51,490.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,078.79 : 184,619.66 = 34,326.90 : x
  2. Step 2: Convert to fraction form
    123,078.79/184,619.66 = 34,326.90/x
  3. Step 3: Cross multiply
    123,078.79x = 184,619.66 × 34,326.90
  4. Step 4: Simplify right side
    123,078.79x = 6,337,420,606.85
  5. Step 5: Solve for x
    x = 6,337,420,606.85/123,078.79
  6. Step 6: Final answer
    x = 51,490.76

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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.