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Finding the Fourth Proportional to 92,212.97, 127,259.75 and 55,917.88

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Solution

The fourth proportional to 92,212.97, 127,259.75 and 55,917.88 is: 77,170.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,212.97 : 127,259.75 = 55,917.88 : x
  2. Step 2: Convert to fraction form
    92,212.97/127,259.75 = 55,917.88/x
  3. Step 3: Cross multiply
    92,212.97x = 127,259.75 × 55,917.88
  4. Step 4: Simplify right side
    92,212.97x = 7,116,095,250.98
  5. Step 5: Solve for x
    x = 7,116,095,250.98/92,212.97
  6. Step 6: Final answer
    x = 77,170.22

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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.