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Finding the Fourth Proportional to 74,947.88, 103,427.87 and 40,956.59

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Solution

The fourth proportional to 74,947.88, 103,427.87 and 40,956.59 is: 56,519.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,947.88 : 103,427.87 = 40,956.59 : x
  2. Step 2: Convert to fraction form
    74,947.88/103,427.87 = 40,956.59/x
  3. Step 3: Cross multiply
    74,947.88x = 103,427.87 × 40,956.59
  4. Step 4: Simplify right side
    74,947.88x = 4,236,052,144.24
  5. Step 5: Solve for x
    x = 4,236,052,144.24/74,947.88
  6. Step 6: Final answer
    x = 56,519.97

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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.