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Finding the Fourth Proportional to 178,687.97, 246,589.40 and 103,236.47

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Solution

The fourth proportional to 178,687.97, 246,589.40 and 103,236.47 is: 142,466.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,687.97 : 246,589.40 = 103,236.47 : x
  2. Step 2: Convert to fraction form
    178,687.97/246,589.40 = 103,236.47/x
  3. Step 3: Cross multiply
    178,687.97x = 246,589.40 × 103,236.47
  4. Step 4: Simplify right side
    178,687.97x = 25,457,019,145.27
  5. Step 5: Solve for x
    x = 25,457,019,145.27/178,687.97
  6. Step 6: Final answer
    x = 142,466.33

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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.