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Finding the Fourth Proportional to 75,355.98, 103,991.61 and 41,365.88

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Solution

The fourth proportional to 75,355.98, 103,991.61 and 41,365.88 is: 57,085.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,355.98 : 103,991.61 = 41,365.88 : x
  2. Step 2: Convert to fraction form
    75,355.98/103,991.61 = 41,365.88/x
  3. Step 3: Cross multiply
    75,355.98x = 103,991.61 × 41,365.88
  4. Step 4: Simplify right side
    75,355.98x = 4,301,704,460.27
  5. Step 5: Solve for x
    x = 4,301,704,460.27/75,355.98
  6. Step 6: Final answer
    x = 57,085.11

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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.