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Finding the Fourth Proportional to 8,706,668.43, 11,987,758.92 and 7,899,542.42

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Solution

The fourth proportional to 8,706,668.43, 11,987,758.92 and 7,899,542.42 is: 10,876,469.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706,668.43 : 11,987,758.92 = 7,899,542.42 : x
  2. Step 2: Convert to fraction form
    8,706,668.43/11,987,758.92 = 7,899,542.42/x
  3. Step 3: Cross multiply
    8,706,668.43x = 11,987,758.92 × 7,899,542.42
  4. Step 4: Simplify right side
    8,706,668.43x = 94,697,810,078,957.88
  5. Step 5: Solve for x
    x = 94,697,810,078,957.88/8,706,668.43
  6. Step 6: Final answer
    x = 10,876,469.09

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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.