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Finding the Fourth Proportional to 92,092.63, 138,138.49 and 79,574.34

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Solution

The fourth proportional to 92,092.63, 138,138.49 and 79,574.34 is: 119,361.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,092.63 : 138,138.49 = 79,574.34 : x
  2. Step 2: Convert to fraction form
    92,092.63/138,138.49 = 79,574.34/x
  3. Step 3: Cross multiply
    92,092.63x = 138,138.49 × 79,574.34
  4. Step 4: Simplify right side
    92,092.63x = 10,992,278,851.26
  5. Step 5: Solve for x
    x = 10,992,278,851.26/92,092.63
  6. Step 6: Final answer
    x = 119,361.11

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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.