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Finding the Fourth Proportional to 907,967.80, 1,361,805.90 and 276,734.80

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Solution

The fourth proportional to 907,967.80, 1,361,805.90 and 276,734.80 is: 415,057.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,967.80 : 1,361,805.90 = 276,734.80 : x
  2. Step 2: Convert to fraction form
    907,967.80/1,361,805.90 = 276,734.80/x
  3. Step 3: Cross multiply
    907,967.80x = 1,361,805.90 × 276,734.80
  4. Step 4: Simplify right side
    907,967.80x = 376,859,083,375.32
  5. Step 5: Solve for x
    x = 376,859,083,375.32/907,967.80
  6. Step 6: Final answer
    x = 415,057.76

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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.