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Finding the Fourth Proportional to 263,603.70, 395,126.37 and 86,063.04

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Solution

The fourth proportional to 263,603.70, 395,126.37 and 86,063.04 is: 129,003.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,603.70 : 395,126.37 = 86,063.04 : x
  2. Step 2: Convert to fraction form
    263,603.70/395,126.37 = 86,063.04/x
  3. Step 3: Cross multiply
    263,603.70x = 395,126.37 × 86,063.04
  4. Step 4: Simplify right side
    263,603.70x = 34,005,776,586.36
  5. Step 5: Solve for x
    x = 34,005,776,586.36/263,603.70
  6. Step 6: Final answer
    x = 129,003.41

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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.