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Finding the Fourth Proportional to 404,621.28, 558,377.28 and 225,773.28

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Solution

The fourth proportional to 404,621.28, 558,377.28 and 225,773.28 is: 311,567.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,621.28 : 558,377.28 = 225,773.28 : x
  2. Step 2: Convert to fraction form
    404,621.28/558,377.28 = 225,773.28/x
  3. Step 3: Cross multiply
    404,621.28x = 558,377.28 × 225,773.28
  4. Step 4: Simplify right side
    404,621.28x = 126,066,669,983.08
  5. Step 5: Solve for x
    x = 126,066,669,983.08/404,621.28
  6. Step 6: Final answer
    x = 311,567.08

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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.