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Finding the Fourth Proportional to 492,825.31, 739,279.46 and 155,858.48

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Solution

The fourth proportional to 492,825.31, 739,279.46 and 155,858.48 is: 233,800.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,825.31 : 739,279.46 = 155,858.48 : x
  2. Step 2: Convert to fraction form
    492,825.31/739,279.46 = 155,858.48/x
  3. Step 3: Cross multiply
    492,825.31x = 739,279.46 × 155,858.48
  4. Step 4: Simplify right side
    492,825.31x = 115,222,971,519.66
  5. Step 5: Solve for x
    x = 115,222,971,519.66/492,825.31
  6. Step 6: Final answer
    x = 233,800.84

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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.