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Finding the Fourth Proportional to 16,912.51, 25,384.07 and 9,021.65

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Solution

The fourth proportional to 16,912.51, 25,384.07 and 9,021.65 is: 13,540.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,912.51 : 25,384.07 = 9,021.65 : x
  2. Step 2: Convert to fraction form
    16,912.51/25,384.07 = 9,021.65/x
  3. Step 3: Cross multiply
    16,912.51x = 25,384.07 × 9,021.65
  4. Step 4: Simplify right side
    16,912.51x = 229,006,090.75
  5. Step 5: Solve for x
    x = 229,006,090.75/16,912.51
  6. Step 6: Final answer
    x = 13,540.63

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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.