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Finding the Fourth Proportional to 92,580.17, 127,760.80 and 50,138.70

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Solution

The fourth proportional to 92,580.17, 127,760.80 and 50,138.70 is: 69,191.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,580.17 : 127,760.80 = 50,138.70 : x
  2. Step 2: Convert to fraction form
    92,580.17/127,760.80 = 50,138.70/x
  3. Step 3: Cross multiply
    92,580.17x = 127,760.80 × 50,138.70
  4. Step 4: Simplify right side
    92,580.17x = 6,405,760,756.26
  5. Step 5: Solve for x
    x = 6,405,760,756.26/92,580.17
  6. Step 6: Final answer
    x = 69,191.50

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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.