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Finding the Fourth Proportional to 17,920.74, 24,731.46 and 9,963.09

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Solution

The fourth proportional to 17,920.74, 24,731.46 and 9,963.09 is: 13,749.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,920.74 : 24,731.46 = 9,963.09 : x
  2. Step 2: Convert to fraction form
    17,920.74/24,731.46 = 9,963.09/x
  3. Step 3: Cross multiply
    17,920.74x = 24,731.46 × 9,963.09
  4. Step 4: Simplify right side
    17,920.74x = 246,401,761.81
  5. Step 5: Solve for x
    x = 246,401,761.81/17,920.74
  6. Step 6: Final answer
    x = 13,749.53

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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.