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Finding the Fourth Proportional to 351,161.20, 526,605.72 and 126,473.68

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Solution

The fourth proportional to 351,161.20, 526,605.72 and 126,473.68 is: 189,661.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,161.20 : 526,605.72 = 126,473.68 : x
  2. Step 2: Convert to fraction form
    351,161.20/526,605.72 = 126,473.68/x
  3. Step 3: Cross multiply
    351,161.20x = 526,605.72 × 126,473.68
  4. Step 4: Simplify right side
    351,161.20x = 66,601,763,317.45
  5. Step 5: Solve for x
    x = 66,601,763,317.45/351,161.20
  6. Step 6: Final answer
    x = 189,661.51

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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.