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Finding the Fourth Proportional to 616,744.40, 851,251.08 and 401,511.44

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Solution

The fourth proportional to 616,744.40, 851,251.08 and 401,511.44 is: 554,179.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,744.40 : 851,251.08 = 401,511.44 : x
  2. Step 2: Convert to fraction form
    616,744.40/851,251.08 = 401,511.44/x
  3. Step 3: Cross multiply
    616,744.40x = 851,251.08 × 401,511.44
  4. Step 4: Simplify right side
    616,744.40x = 341,787,046,932.36
  5. Step 5: Solve for x
    x = 341,787,046,932.36/616,744.40
  6. Step 6: Final answer
    x = 554,179.41

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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.