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Finding the Fourth Proportional to 92,793, 139,212.62 and 27,129

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Solution

The fourth proportional to 92,793, 139,212.62 and 27,129 is: 40,700.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,793 : 139,212.62 = 27,129 : x
  2. Step 2: Convert to fraction form
    92,793/139,212.62 = 27,129/x
  3. Step 3: Cross multiply
    92,793x = 139,212.62 × 27,129
  4. Step 4: Simplify right side
    92,793x = 3,776,699,167.98
  5. Step 5: Solve for x
    x = 3,776,699,167.98/92,793
  6. Step 6: Final answer
    x = 40,700.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.