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Finding the Fourth Proportional to 417,136.64, 620,338.50 and 403,850.61

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Solution

The fourth proportional to 417,136.64, 620,338.50 and 403,850.61 is: 600,580.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,136.64 : 620,338.50 = 403,850.61 : x
  2. Step 2: Convert to fraction form
    417,136.64/620,338.50 = 403,850.61/x
  3. Step 3: Cross multiply
    417,136.64x = 620,338.50 × 403,850.61
  4. Step 4: Simplify right side
    417,136.64x = 250,524,081,631.49
  5. Step 5: Solve for x
    x = 250,524,081,631.49/417,136.64
  6. Step 6: Final answer
    x = 600,580.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.