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Finding the Fourth Proportional to 127,185, 190,781.15 and 33,690.75

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Solution

The fourth proportional to 127,185, 190,781.15 and 33,690.75 is: 50,537.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,185 : 190,781.15 = 33,690.75 : x
  2. Step 2: Convert to fraction form
    127,185/190,781.15 = 33,690.75/x
  3. Step 3: Cross multiply
    127,185x = 190,781.15 × 33,690.75
  4. Step 4: Simplify right side
    127,185x = 6,427,559,860.91
  5. Step 5: Solve for x
    x = 6,427,559,860.91/127,185
  6. Step 6: Final answer
    x = 50,537.09

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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.