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Finding the Fourth Proportional to 123,245.72, 184,879.16 and 43,276.81

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Solution

The fourth proportional to 123,245.72, 184,879.16 and 43,276.81 is: 64,918.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,245.72 : 184,879.16 = 43,276.81 : x
  2. Step 2: Convert to fraction form
    123,245.72/184,879.16 = 43,276.81/x
  3. Step 3: Cross multiply
    123,245.72x = 184,879.16 × 43,276.81
  4. Step 4: Simplify right side
    123,245.72x = 8,000,980,280.28
  5. Step 5: Solve for x
    x = 8,000,980,280.28/123,245.72
  6. Step 6: Final answer
    x = 64,918.93

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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.