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Finding the Fourth Proportional to 15,175.58, 20,942.44 and 8,461.14

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Solution

The fourth proportional to 15,175.58, 20,942.44 and 8,461.14 is: 11,676.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,175.58 : 20,942.44 = 8,461.14 : x
  2. Step 2: Convert to fraction form
    15,175.58/20,942.44 = 8,461.14/x
  3. Step 3: Cross multiply
    15,175.58x = 20,942.44 × 8,461.14
  4. Step 4: Simplify right side
    15,175.58x = 177,196,916.78
  5. Step 5: Solve for x
    x = 177,196,916.78/15,175.58
  6. Step 6: Final answer
    x = 11,676.45

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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.