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Finding the Fourth Proportional to 92,378.88, 138,568.32 and 36,936

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Solution

The fourth proportional to 92,378.88, 138,568.32 and 36,936 is: 55,404

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,378.88 : 138,568.32 = 36,936 : x
  2. Step 2: Convert to fraction form
    92,378.88/138,568.32 = 36,936/x
  3. Step 3: Cross multiply
    92,378.88x = 138,568.32 × 36,936
  4. Step 4: Simplify right side
    92,378.88x = 5,118,159,467.52
  5. Step 5: Solve for x
    x = 5,118,159,467.52/92,378.88
  6. Step 6: Final answer
    x = 55,404

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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.