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Finding the Fourth Proportional to 75,165.50, 103,731.69 and 41,631.50

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Solution

The fourth proportional to 75,165.50, 103,731.69 and 41,631.50 is: 57,453.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,165.50 : 103,731.69 = 41,631.50 : x
  2. Step 2: Convert to fraction form
    75,165.50/103,731.69 = 41,631.50/x
  3. Step 3: Cross multiply
    75,165.50x = 103,731.69 × 41,631.50
  4. Step 4: Simplify right side
    75,165.50x = 4,318,505,852.24
  5. Step 5: Solve for x
    x = 4,318,505,852.24/75,165.50
  6. Step 6: Final answer
    x = 57,453.30

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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.