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Finding the Fourth Proportional to 10,809.92, 16,213.53 and 2,913.06

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Solution

The fourth proportional to 10,809.92, 16,213.53 and 2,913.06 is: 4,369.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,809.92 : 16,213.53 = 2,913.06 : x
  2. Step 2: Convert to fraction form
    10,809.92/16,213.53 = 2,913.06/x
  3. Step 3: Cross multiply
    10,809.92x = 16,213.53 × 2,913.06
  4. Step 4: Simplify right side
    10,809.92x = 47,231,057.43
  5. Step 5: Solve for x
    x = 47,231,057.43/10,809.92
  6. Step 6: Final answer
    x = 4,369.23

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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.