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Finding the Fourth Proportional to 92,580.57, 127,761.30 and 50,139

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Solution

The fourth proportional to 92,580.57, 127,761.30 and 50,139 is: 69,191.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,580.57 : 127,761.30 = 50,139 : x
  2. Step 2: Convert to fraction form
    92,580.57/127,761.30 = 50,139/x
  3. Step 3: Cross multiply
    92,580.57x = 127,761.30 × 50,139
  4. Step 4: Simplify right side
    92,580.57x = 6,405,823,820.70
  5. Step 5: Solve for x
    x = 6,405,823,820.70/92,580.57
  6. Step 6: Final answer
    x = 69,191.88

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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.