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Finding the Fourth Proportional to 404,545.94, 558,286.80 and 220,794.55

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Solution

The fourth proportional to 404,545.94, 558,286.80 and 220,794.55 is: 304,703.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,545.94 : 558,286.80 = 220,794.55 : x
  2. Step 2: Convert to fraction form
    404,545.94/558,286.80 = 220,794.55/x
  3. Step 3: Cross multiply
    404,545.94x = 558,286.80 × 220,794.55
  4. Step 4: Simplify right side
    404,545.94x = 123,266,681,381.22
  5. Step 5: Solve for x
    x = 123,266,681,381.22/404,545.94
  6. Step 6: Final answer
    x = 304,703.79

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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.