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Finding the Fourth Proportional to 92,612.30, 138,918.87 and 22,491.63

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Solution

The fourth proportional to 92,612.30, 138,918.87 and 22,491.63 is: 33,737.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,612.30 : 138,918.87 = 22,491.63 : x
  2. Step 2: Convert to fraction form
    92,612.30/138,918.87 = 22,491.63/x
  3. Step 3: Cross multiply
    92,612.30x = 138,918.87 × 22,491.63
  4. Step 4: Simplify right side
    92,612.30x = 3,124,511,824.06
  5. Step 5: Solve for x
    x = 3,124,511,824.06/92,612.30
  6. Step 6: Final answer
    x = 33,737.55

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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.