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Finding the Fourth Proportional to 74,965.08, 103,451.88 and 41,431.08

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Solution

The fourth proportional to 74,965.08, 103,451.88 and 41,431.08 is: 57,174.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,965.08 : 103,451.88 = 41,431.08 : x
  2. Step 2: Convert to fraction form
    74,965.08/103,451.88 = 41,431.08/x
  3. Step 3: Cross multiply
    74,965.08x = 103,451.88 × 41,431.08
  4. Step 4: Simplify right side
    74,965.08x = 4,286,123,116.43
  5. Step 5: Solve for x
    x = 4,286,123,116.43/74,965.08
  6. Step 6: Final answer
    x = 57,174.93

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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.