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Finding the Fourth Proportional to 81,996.40, 123,023.40 and 35,263.60

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Solution

The fourth proportional to 81,996.40, 123,023.40 and 35,263.60 is: 52,907.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,996.40 : 123,023.40 = 35,263.60 : x
  2. Step 2: Convert to fraction form
    81,996.40/123,023.40 = 35,263.60/x
  3. Step 3: Cross multiply
    81,996.40x = 123,023.40 × 35,263.60
  4. Step 4: Simplify right side
    81,996.40x = 4,338,247,968.24
  5. Step 5: Solve for x
    x = 4,338,247,968.24/81,996.40
  6. Step 6: Final answer
    x = 52,907.79

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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.