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Finding the Fourth Proportional to 15,175.26, 20,941.97 and 8,461.32

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Solution

The fourth proportional to 15,175.26, 20,941.97 and 8,461.32 is: 11,676.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,175.26 : 20,941.97 = 8,461.32 : x
  2. Step 2: Convert to fraction form
    15,175.26/20,941.97 = 8,461.32/x
  3. Step 3: Cross multiply
    15,175.26x = 20,941.97 × 8,461.32
  4. Step 4: Simplify right side
    15,175.26x = 177,196,671.46
  5. Step 5: Solve for x
    x = 177,196,671.46/15,175.26
  6. Step 6: Final answer
    x = 11,676.68

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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.