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Finding the Fourth Proportional to 27,801.70, 38,375.71 and 16,899.80

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Solution

The fourth proportional to 27,801.70, 38,375.71 and 16,899.80 is: 23,327.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,801.70 : 38,375.71 = 16,899.80 : x
  2. Step 2: Convert to fraction form
    27,801.70/38,375.71 = 16,899.80/x
  3. Step 3: Cross multiply
    27,801.70x = 38,375.71 × 16,899.80
  4. Step 4: Simplify right side
    27,801.70x = 648,541,823.91
  5. Step 5: Solve for x
    x = 648,541,823.91/27,801.70
  6. Step 6: Final answer
    x = 23,327.41

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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.