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Finding the Fourth Proportional to 1,136,933.76, 1,568,973.60 and 627,640.32

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Solution

The fourth proportional to 1,136,933.76, 1,568,973.60 and 627,640.32 is: 866,146.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,136,933.76 : 1,568,973.60 = 627,640.32 : x
  2. Step 2: Convert to fraction form
    1,136,933.76/1,568,973.60 = 627,640.32/x
  3. Step 3: Cross multiply
    1,136,933.76x = 1,568,973.60 × 627,640.32
  4. Step 4: Simplify right side
    1,136,933.76x = 984,751,092,375.55
  5. Step 5: Solve for x
    x = 984,751,092,375.55/1,136,933.76
  6. Step 6: Final answer
    x = 866,146.41

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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.