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Finding the Fourth Proportional to 436,309.96, 654,479.25 and 120,740.44

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Solution

The fourth proportional to 436,309.96, 654,479.25 and 120,740.44 is: 181,114.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,309.96 : 654,479.25 = 120,740.44 : x
  2. Step 2: Convert to fraction form
    436,309.96/654,479.25 = 120,740.44/x
  3. Step 3: Cross multiply
    436,309.96x = 654,479.25 × 120,740.44
  4. Step 4: Simplify right side
    436,309.96x = 79,022,112,615.87
  5. Step 5: Solve for x
    x = 79,022,112,615.87/436,309.96
  6. Step 6: Final answer
    x = 181,114.62

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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.