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Finding the Fourth Proportional to 18,493.31, 25,542.64 and 12,514.60

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Solution

The fourth proportional to 18,493.31, 25,542.64 and 12,514.60 is: 17,284.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,493.31 : 25,542.64 = 12,514.60 : x
  2. Step 2: Convert to fraction form
    18,493.31/25,542.64 = 12,514.60/x
  3. Step 3: Cross multiply
    18,493.31x = 25,542.64 × 12,514.60
  4. Step 4: Simplify right side
    18,493.31x = 319,655,970.12
  5. Step 5: Solve for x
    x = 319,655,970.12/18,493.31
  6. Step 6: Final answer
    x = 17,284.95

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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.