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Finding the Fourth Proportional to 117,508.88, 162,145.13 and 67,198.16

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Solution

The fourth proportional to 117,508.88, 162,145.13 and 67,198.16 is: 92,723.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,508.88 : 162,145.13 = 67,198.16 : x
  2. Step 2: Convert to fraction form
    117,508.88/162,145.13 = 67,198.16/x
  3. Step 3: Cross multiply
    117,508.88x = 162,145.13 × 67,198.16
  4. Step 4: Simplify right side
    117,508.88x = 10,895,853,242.24
  5. Step 5: Solve for x
    x = 10,895,853,242.24/117,508.88
  6. Step 6: Final answer
    x = 92,723.66

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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.