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Finding the Fourth Proportional to 47,668.76, 71,480.92 and 17,681.79

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Solution

The fourth proportional to 47,668.76, 71,480.92 and 17,681.79 is: 26,514.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,668.76 : 71,480.92 = 17,681.79 : x
  2. Step 2: Convert to fraction form
    47,668.76/71,480.92 = 17,681.79/x
  3. Step 3: Cross multiply
    47,668.76x = 71,480.92 × 17,681.79
  4. Step 4: Simplify right side
    47,668.76x = 1,263,910,616.45
  5. Step 5: Solve for x
    x = 1,263,910,616.45/47,668.76
  6. Step 6: Final answer
    x = 26,514.44

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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.