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Finding the Fourth Proportional to 340,991.45, 511,507.67 and 104,336.18

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Solution

The fourth proportional to 340,991.45, 511,507.67 and 104,336.18 is: 156,510.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,991.45 : 511,507.67 = 104,336.18 : x
  2. Step 2: Convert to fraction form
    340,991.45/511,507.67 = 104,336.18/x
  3. Step 3: Cross multiply
    340,991.45x = 511,507.67 × 104,336.18
  4. Step 4: Simplify right side
    340,991.45x = 53,368,755,310.57
  5. Step 5: Solve for x
    x = 53,368,755,310.57/340,991.45
  6. Step 6: Final answer
    x = 156,510.54

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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.