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Finding the Fourth Proportional to 12,910.53, 19,365.39 and 3,676.53

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Solution

The fourth proportional to 12,910.53, 19,365.39 and 3,676.53 is: 5,514.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,910.53 : 19,365.39 = 3,676.53 : x
  2. Step 2: Convert to fraction form
    12,910.53/19,365.39 = 3,676.53/x
  3. Step 3: Cross multiply
    12,910.53x = 19,365.39 × 3,676.53
  4. Step 4: Simplify right side
    12,910.53x = 71,197,437.30
  5. Step 5: Solve for x
    x = 71,197,437.30/12,910.53
  6. Step 6: Final answer
    x = 5,514.68

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1.5x scale

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.