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Finding the Fourth Proportional to 16,668.91, 22,995.25 and 11,889.91

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Solution

The fourth proportional to 16,668.91, 22,995.25 and 11,889.91 is: 16,402.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,668.91 : 22,995.25 = 11,889.91 : x
  2. Step 2: Convert to fraction form
    16,668.91/22,995.25 = 11,889.91/x
  3. Step 3: Cross multiply
    16,668.91x = 22,995.25 × 11,889.91
  4. Step 4: Simplify right side
    16,668.91x = 273,411,452.93
  5. Step 5: Solve for x
    x = 273,411,452.93/16,668.91
  6. Step 6: Final answer
    x = 16,402.48

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1.5x scale

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.