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Finding the Fourth Proportional to 410,857.20, 616,237.20 and 111,319.20

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Solution

The fourth proportional to 410,857.20, 616,237.20 and 111,319.20 is: 166,965.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,857.20 : 616,237.20 = 111,319.20 : x
  2. Step 2: Convert to fraction form
    410,857.20/616,237.20 = 111,319.20/x
  3. Step 3: Cross multiply
    410,857.20x = 616,237.20 × 111,319.20
  4. Step 4: Simplify right side
    410,857.20x = 68,599,032,114.24
  5. Step 5: Solve for x
    x = 68,599,032,114.24/410,857.20
  6. Step 6: Final answer
    x = 166,965.63

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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.