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Finding the Fourth Proportional to 14,601.16, 21,891.90 and 6,812.20

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Solution

The fourth proportional to 14,601.16, 21,891.90 and 6,812.20 is: 10,213.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,601.16 : 21,891.90 = 6,812.20 : x
  2. Step 2: Convert to fraction form
    14,601.16/21,891.90 = 6,812.20/x
  3. Step 3: Cross multiply
    14,601.16x = 21,891.90 × 6,812.20
  4. Step 4: Simplify right side
    14,601.16x = 149,132,001.18
  5. Step 5: Solve for x
    x = 149,132,001.18/14,601.16
  6. Step 6: Final answer
    x = 10,213.71

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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.