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Finding the Fourth Proportional to 101,218.31, 151,919.60 and 53,873.15

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Solution

The fourth proportional to 101,218.31, 151,919.60 and 53,873.15 is: 80,858.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,218.31 : 151,919.60 = 53,873.15 : x
  2. Step 2: Convert to fraction form
    101,218.31/151,919.60 = 53,873.15/x
  3. Step 3: Cross multiply
    101,218.31x = 151,919.60 × 53,873.15
  4. Step 4: Simplify right side
    101,218.31x = 8,184,387,527.36
  5. Step 5: Solve for x
    x = 8,184,387,527.36/101,218.31
  6. Step 6: Final answer
    x = 80,858.77

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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.