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Finding the Fourth Proportional to 75,356.43, 103,986.15 and 41,359.51

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Solution

The fourth proportional to 75,356.43, 103,986.15 and 41,359.51 is: 57,072.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,356.43 : 103,986.15 = 41,359.51 : x
  2. Step 2: Convert to fraction form
    75,356.43/103,986.15 = 41,359.51/x
  3. Step 3: Cross multiply
    75,356.43x = 103,986.15 × 41,359.51
  4. Step 4: Simplify right side
    75,356.43x = 4,300,816,534.64
  5. Step 5: Solve for x
    x = 4,300,816,534.64/75,356.43
  6. Step 6: Final answer
    x = 57,072.99

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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.