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Finding the Fourth Proportional to 121,991.93, 183,005.38 and 37,759.49

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Solution

The fourth proportional to 121,991.93, 183,005.38 and 37,759.49 is: 56,644.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,991.93 : 183,005.38 = 37,759.49 : x
  2. Step 2: Convert to fraction form
    121,991.93/183,005.38 = 37,759.49/x
  3. Step 3: Cross multiply
    121,991.93x = 183,005.38 × 37,759.49
  4. Step 4: Simplify right side
    121,991.93x = 6,910,188,712.23
  5. Step 5: Solve for x
    x = 6,910,188,712.23/121,991.93
  6. Step 6: Final answer
    x = 56,644.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.