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Finding the Fourth Proportional to 439,539.62, 659,178.20 and 186,819.01

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Solution

The fourth proportional to 439,539.62, 659,178.20 and 186,819.01 is: 280,172.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,539.62 : 659,178.20 = 186,819.01 : x
  2. Step 2: Convert to fraction form
    439,539.62/659,178.20 = 186,819.01/x
  3. Step 3: Cross multiply
    439,539.62x = 659,178.20 × 186,819.01
  4. Step 4: Simplify right side
    439,539.62x = 123,147,017,556.68
  5. Step 5: Solve for x
    x = 123,147,017,556.68/439,539.62
  6. Step 6: Final answer
    x = 280,172.74

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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.