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Finding the Fourth Proportional to 393,390.60, 590,277.90 and 182,920.20

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Solution

The fourth proportional to 393,390.60, 590,277.90 and 182,920.20 is: 274,469.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,390.60 : 590,277.90 = 182,920.20 : x
  2. Step 2: Convert to fraction form
    393,390.60/590,277.90 = 182,920.20/x
  3. Step 3: Cross multiply
    393,390.60x = 590,277.90 × 182,920.20
  4. Step 4: Simplify right side
    393,390.60x = 107,973,751,523.58
  5. Step 5: Solve for x
    x = 107,973,751,523.58/393,390.60
  6. Step 6: Final answer
    x = 274,469.58

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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.