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Finding the Fourth Proportional to 404,643.36, 558,407.86 and 223,355.33

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Solution

The fourth proportional to 404,643.36, 558,407.86 and 223,355.33 is: 308,230.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,643.36 : 558,407.86 = 223,355.33 : x
  2. Step 2: Convert to fraction form
    404,643.36/558,407.86 = 223,355.33/x
  3. Step 3: Cross multiply
    404,643.36x = 558,407.86 × 223,355.33
  4. Step 4: Simplify right side
    404,643.36x = 124,723,371,844.89
  5. Step 5: Solve for x
    x = 124,723,371,844.89/404,643.36
  6. Step 6: Final answer
    x = 308,230.37

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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.