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Finding the Fourth Proportional to 403,891.42, 605,545.53 and 123,255.58

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Solution

The fourth proportional to 403,891.42, 605,545.53 and 123,255.58 is: 184,794.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,891.42 : 605,545.53 = 123,255.58 : x
  2. Step 2: Convert to fraction form
    403,891.42/605,545.53 = 123,255.58/x
  3. Step 3: Cross multiply
    403,891.42x = 605,545.53 × 123,255.58
  4. Step 4: Simplify right side
    403,891.42x = 74,636,865,516.56
  5. Step 5: Solve for x
    x = 74,636,865,516.56/403,891.42
  6. Step 6: Final answer
    x = 184,794.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.