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Finding the Fourth Proportional to 92,124.78, 127,121.90 and 51,837.72

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Solution

The fourth proportional to 92,124.78, 127,121.90 and 51,837.72 is: 71,530.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,124.78 : 127,121.90 = 51,837.72 : x
  2. Step 2: Convert to fraction form
    92,124.78/127,121.90 = 51,837.72/x
  3. Step 3: Cross multiply
    92,124.78x = 127,121.90 × 51,837.72
  4. Step 4: Simplify right side
    92,124.78x = 6,589,709,198.88
  5. Step 5: Solve for x
    x = 6,589,709,198.88/92,124.78
  6. Step 6: Final answer
    x = 71,530.26

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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.