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Finding the Fourth Proportional to 92,168.72, 127,190.74 and 51,332.57

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Solution

The fourth proportional to 92,168.72, 127,190.74 and 51,332.57 is: 70,837.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,168.72 : 127,190.74 = 51,332.57 : x
  2. Step 2: Convert to fraction form
    92,168.72/127,190.74 = 51,332.57/x
  3. Step 3: Cross multiply
    92,168.72x = 127,190.74 × 51,332.57
  4. Step 4: Simplify right side
    92,168.72x = 6,529,027,373.33
  5. Step 5: Solve for x
    x = 6,529,027,373.33/92,168.72
  6. Step 6: Final answer
    x = 70,837.78

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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.