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Finding the Fourth Proportional to 92,992, 139,488 and 27,328

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Solution

The fourth proportional to 92,992, 139,488 and 27,328 is: 40,992

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,992 : 139,488 = 27,328 : x
  2. Step 2: Convert to fraction form
    92,992/139,488 = 27,328/x
  3. Step 3: Cross multiply
    92,992x = 139,488 × 27,328
  4. Step 4: Simplify right side
    92,992x = 3,811,928,064
  5. Step 5: Solve for x
    x = 3,811,928,064/92,992
  6. Step 6: Final answer
    x = 40,992

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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.