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Finding the Fourth Proportional to 263,659.68, 395,426.79 and 113,817.98

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Solution

The fourth proportional to 263,659.68, 395,426.79 and 113,817.98 is: 170,699.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,659.68 : 395,426.79 = 113,817.98 : x
  2. Step 2: Convert to fraction form
    263,659.68/395,426.79 = 113,817.98/x
  3. Step 3: Cross multiply
    263,659.68x = 395,426.79 × 113,817.98
  4. Step 4: Simplify right side
    263,659.68x = 45,006,678,475.68
  5. Step 5: Solve for x
    x = 45,006,678,475.68/263,659.68
  6. Step 6: Final answer
    x = 170,699.89

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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.