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Finding the Fourth Proportional to 16,894.20, 25,308.90 and 10,300.80

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Solution

The fourth proportional to 16,894.20, 25,308.90 and 10,300.80 is: 15,431.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,894.20 : 25,308.90 = 10,300.80 : x
  2. Step 2: Convert to fraction form
    16,894.20/25,308.90 = 10,300.80/x
  3. Step 3: Cross multiply
    16,894.20x = 25,308.90 × 10,300.80
  4. Step 4: Simplify right side
    16,894.20x = 260,701,917.12
  5. Step 5: Solve for x
    x = 260,701,917.12/16,894.20
  6. Step 6: Final answer
    x = 15,431.44

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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.