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Finding the Fourth Proportional to 16,909.30, 25,363.92 and 6,513.76

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Solution

The fourth proportional to 16,909.30, 25,363.92 and 6,513.76 is: 9,770.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,909.30 : 25,363.92 = 6,513.76 : x
  2. Step 2: Convert to fraction form
    16,909.30/25,363.92 = 6,513.76/x
  3. Step 3: Cross multiply
    16,909.30x = 25,363.92 × 6,513.76
  4. Step 4: Simplify right side
    16,909.30x = 165,214,487.54
  5. Step 5: Solve for x
    x = 165,214,487.54/16,909.30
  6. Step 6: Final answer
    x = 9,770.63

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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.