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Finding the Fourth Proportional to 415,112.70, 622,865.88 and 246,965.21

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Solution

The fourth proportional to 415,112.70, 622,865.88 and 246,965.21 is: 370,564.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,112.70 : 622,865.88 = 246,965.21 : x
  2. Step 2: Convert to fraction form
    415,112.70/622,865.88 = 246,965.21/x
  3. Step 3: Cross multiply
    415,112.70x = 622,865.88 × 246,965.21
  4. Step 4: Simplify right side
    415,112.70x = 153,826,202,856.04
  5. Step 5: Solve for x
    x = 153,826,202,856.04/415,112.70
  6. Step 6: Final answer
    x = 370,564.92

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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.