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Finding the Fourth Proportional to 403,703.93, 557,136.56 and 222,415.83

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Solution

The fourth proportional to 403,703.93, 557,136.56 and 222,415.83 is: 306,947.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,703.93 : 557,136.56 = 222,415.83 : x
  2. Step 2: Convert to fraction form
    403,703.93/557,136.56 = 222,415.83/x
  3. Step 3: Cross multiply
    403,703.93x = 557,136.56 × 222,415.83
  4. Step 4: Simplify right side
    403,703.93x = 123,915,990,971.78
  5. Step 5: Solve for x
    x = 123,915,990,971.78/403,703.93
  6. Step 6: Final answer
    x = 306,947.69

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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.