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Finding the Fourth Proportional to 92,029.80, 126,825.42 and 79,278.96

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Solution

The fourth proportional to 92,029.80, 126,825.42 and 79,278.96 is: 109,253.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,029.80 : 126,825.42 = 79,278.96 : x
  2. Step 2: Convert to fraction form
    92,029.80/126,825.42 = 79,278.96/x
  3. Step 3: Cross multiply
    92,029.80x = 126,825.42 × 79,278.96
  4. Step 4: Simplify right side
    92,029.80x = 10,054,587,399.16
  5. Step 5: Solve for x
    x = 10,054,587,399.16/92,029.80
  6. Step 6: Final answer
    x = 109,253.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.