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Finding the Fourth Proportional to 14,960.84, 20,640.89 and 9,293.56

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Solution

The fourth proportional to 14,960.84, 20,640.89 and 9,293.56 is: 12,821.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,960.84 : 20,640.89 = 9,293.56 : x
  2. Step 2: Convert to fraction form
    14,960.84/20,640.89 = 9,293.56/x
  3. Step 3: Cross multiply
    14,960.84x = 20,640.89 × 9,293.56
  4. Step 4: Simplify right side
    14,960.84x = 191,827,321.30
  5. Step 5: Solve for x
    x = 191,827,321.30/14,960.84
  6. Step 6: Final answer
    x = 12,821.97

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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.