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Finding the Fourth Proportional to 74,591.28, 102,935.97 and 40,599.90

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Solution

The fourth proportional to 74,591.28, 102,935.97 and 40,599.90 is: 56,027.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,591.28 : 102,935.97 = 40,599.90 : x
  2. Step 2: Convert to fraction form
    74,591.28/102,935.97 = 40,599.90/x
  3. Step 3: Cross multiply
    74,591.28x = 102,935.97 × 40,599.90
  4. Step 4: Simplify right side
    74,591.28x = 4,179,190,088.40
  5. Step 5: Solve for x
    x = 4,179,190,088.40/74,591.28
  6. Step 6: Final answer
    x = 56,027.86

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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.