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Finding the Fourth Proportional to 311,705.40, 466,866.90 and 124,620.60

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Solution

The fourth proportional to 311,705.40, 466,866.90 and 124,620.60 is: 186,654.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,705.40 : 466,866.90 = 124,620.60 : x
  2. Step 2: Convert to fraction form
    311,705.40/466,866.90 = 124,620.60/x
  3. Step 3: Cross multiply
    311,705.40x = 466,866.90 × 124,620.60
  4. Step 4: Simplify right side
    311,705.40x = 58,181,233,198.14
  5. Step 5: Solve for x
    x = 58,181,233,198.14/311,705.40
  6. Step 6: Final answer
    x = 186,654.56

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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.