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Finding the Fourth Proportional to 404,642.36, 558,406.48 and 223,354.33

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Solution

The fourth proportional to 404,642.36, 558,406.48 and 223,354.33 is: 308,228.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,642.36 : 558,406.48 = 223,354.33 : x
  2. Step 2: Convert to fraction form
    404,642.36/558,406.48 = 223,354.33/x
  3. Step 3: Cross multiply
    404,642.36x = 558,406.48 × 223,354.33
  4. Step 4: Simplify right side
    404,642.36x = 124,722,503,253.66
  5. Step 5: Solve for x
    x = 124,722,503,253.66/404,642.36
  6. Step 6: Final answer
    x = 308,228.99

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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.