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Finding the Fourth Proportional to 337,221.20, 505,860.60 and 115,605.20

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Solution

The fourth proportional to 337,221.20, 505,860.60 and 115,605.20 is: 173,417.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    337,221.20 : 505,860.60 = 115,605.20 : x
  2. Step 2: Convert to fraction form
    337,221.20/505,860.60 = 115,605.20/x
  3. Step 3: Cross multiply
    337,221.20x = 505,860.60 × 115,605.20
  4. Step 4: Simplify right side
    337,221.20x = 58,480,115,835.12
  5. Step 5: Solve for x
    x = 58,480,115,835.12/337,221.20
  6. Step 6: Final answer
    x = 173,417.67

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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.