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Finding the Fourth Proportional to 416,930.40, 624,958.20 and 164,113.20

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Solution

The fourth proportional to 416,930.40, 624,958.20 and 164,113.20 is: 245,997.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,930.40 : 624,958.20 = 164,113.20 : x
  2. Step 2: Convert to fraction form
    416,930.40/624,958.20 = 164,113.20/x
  3. Step 3: Cross multiply
    416,930.40x = 624,958.20 × 164,113.20
  4. Step 4: Simplify right side
    416,930.40x = 102,563,890,068.24
  5. Step 5: Solve for x
    x = 102,563,890,068.24/416,930.40
  6. Step 6: Final answer
    x = 245,997.63

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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.