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Finding the Fourth Proportional to 16,813.21, 25,197.67 and 7,916.49

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Solution

The fourth proportional to 16,813.21, 25,197.67 and 7,916.49 is: 11,864.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,813.21 : 25,197.67 = 7,916.49 : x
  2. Step 2: Convert to fraction form
    16,813.21/25,197.67 = 7,916.49/x
  3. Step 3: Cross multiply
    16,813.21x = 25,197.67 × 7,916.49
  4. Step 4: Simplify right side
    16,813.21x = 199,477,102.58
  5. Step 5: Solve for x
    x = 199,477,102.58/16,813.21
  6. Step 6: Final answer
    x = 11,864.31

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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.