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Finding the Fourth Proportional to 494,563.55, 741,741.52 and 139,494.53

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Solution

The fourth proportional to 494,563.55, 741,741.52 and 139,494.53 is: 209,212.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,563.55 : 741,741.52 = 139,494.53 : x
  2. Step 2: Convert to fraction form
    494,563.55/741,741.52 = 139,494.53/x
  3. Step 3: Cross multiply
    494,563.55x = 741,741.52 × 139,494.53
  4. Step 4: Simplify right side
    494,563.55x = 103,468,884,016.41
  5. Step 5: Solve for x
    x = 103,468,884,016.41/494,563.55
  6. Step 6: Final answer
    x = 209,212.51

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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.