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Finding the Fourth Proportional to 74,694.56, 103,077.56 and 40,704.53

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Solution

The fourth proportional to 74,694.56, 103,077.56 and 40,704.53 is: 56,171.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,694.56 : 103,077.56 = 40,704.53 : x
  2. Step 2: Convert to fraction form
    74,694.56/103,077.56 = 40,704.53/x
  3. Step 3: Cross multiply
    74,694.56x = 103,077.56 × 40,704.53
  4. Step 4: Simplify right side
    74,694.56x = 4,195,723,429.82
  5. Step 5: Solve for x
    x = 4,195,723,429.82/74,694.56
  6. Step 6: Final answer
    x = 56,171.74

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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.