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Finding the Fourth Proportional to 624,115.65, 861,005.57 and 365,861.73

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Solution

The fourth proportional to 624,115.65, 861,005.57 and 365,861.73 is: 504,728.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,115.65 : 861,005.57 = 365,861.73 : x
  2. Step 2: Convert to fraction form
    624,115.65/861,005.57 = 365,861.73/x
  3. Step 3: Cross multiply
    624,115.65x = 861,005.57 × 365,861.73
  4. Step 4: Simplify right side
    624,115.65x = 315,008,985,550.53
  5. Step 5: Solve for x
    x = 315,008,985,550.53/624,115.65
  6. Step 6: Final answer
    x = 504,728.55

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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.