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Finding the Fourth Proportional to 493,999.74, 681,759.66 and 279,184.38

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Solution

The fourth proportional to 493,999.74, 681,759.66 and 279,184.38 is: 385,297.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,999.74 : 681,759.66 = 279,184.38 : x
  2. Step 2: Convert to fraction form
    493,999.74/681,759.66 = 279,184.38/x
  3. Step 3: Cross multiply
    493,999.74x = 681,759.66 × 279,184.38
  4. Step 4: Simplify right side
    493,999.74x = 190,336,647,986.11
  5. Step 5: Solve for x
    x = 190,336,647,986.11/493,999.74
  6. Step 6: Final answer
    x = 385,297.06

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1.5x scale

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.