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Finding the Fourth Proportional to 23,149.80, 31,924.80 and 16,818.30

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Solution

The fourth proportional to 23,149.80, 31,924.80 and 16,818.30 is: 23,193.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,149.80 : 31,924.80 = 16,818.30 : x
  2. Step 2: Convert to fraction form
    23,149.80/31,924.80 = 16,818.30/x
  3. Step 3: Cross multiply
    23,149.80x = 31,924.80 × 16,818.30
  4. Step 4: Simplify right side
    23,149.80x = 536,920,863.84
  5. Step 5: Solve for x
    x = 536,920,863.84/23,149.80
  6. Step 6: Final answer
    x = 23,193.33

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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.