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Finding the Fourth Proportional to 15,704.71, 21,673.70 and 8,992.44

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Solution

The fourth proportional to 15,704.71, 21,673.70 and 8,992.44 is: 12,410.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,704.71 : 21,673.70 = 8,992.44 : x
  2. Step 2: Convert to fraction form
    15,704.71/21,673.70 = 8,992.44/x
  3. Step 3: Cross multiply
    15,704.71x = 21,673.70 × 8,992.44
  4. Step 4: Simplify right side
    15,704.71x = 194,899,293.50
  5. Step 5: Solve for x
    x = 194,899,293.50/15,704.71
  6. Step 6: Final answer
    x = 12,410.25

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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.