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Finding the Fourth Proportional to 447,892.18, 618,171.69 and 256,968.70

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Solution

The fourth proportional to 447,892.18, 618,171.69 and 256,968.70 is: 354,662.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,892.18 : 618,171.69 = 256,968.70 : x
  2. Step 2: Convert to fraction form
    447,892.18/618,171.69 = 256,968.70/x
  3. Step 3: Cross multiply
    447,892.18x = 618,171.69 × 256,968.70
  4. Step 4: Simplify right side
    447,892.18x = 158,850,775,556.10
  5. Step 5: Solve for x
    x = 158,850,775,556.10/447,892.18
  6. Step 6: Final answer
    x = 354,662.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.