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Finding the Fourth Proportional to 70,891.21, 97,843.99 and 40,696.93

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Solution

The fourth proportional to 70,891.21, 97,843.99 and 40,696.93 is: 56,169.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,891.21 : 97,843.99 = 40,696.93 : x
  2. Step 2: Convert to fraction form
    70,891.21/97,843.99 = 40,696.93/x
  3. Step 3: Cross multiply
    70,891.21x = 97,843.99 × 40,696.93
  4. Step 4: Simplify right side
    70,891.21x = 3,981,950,011.95
  5. Step 5: Solve for x
    x = 3,981,950,011.95/70,891.21
  6. Step 6: Final answer
    x = 56,169.87

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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.