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Finding the Fourth Proportional to 15,916.25, 21,963.78 and 8,843.10

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Solution

The fourth proportional to 15,916.25, 21,963.78 and 8,843.10 is: 12,203.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,916.25 : 21,963.78 = 8,843.10 : x
  2. Step 2: Convert to fraction form
    15,916.25/21,963.78 = 8,843.10/x
  3. Step 3: Cross multiply
    15,916.25x = 21,963.78 × 8,843.10
  4. Step 4: Simplify right side
    15,916.25x = 194,227,902.92
  5. Step 5: Solve for x
    x = 194,227,902.92/15,916.25
  6. Step 6: Final answer
    x = 12,203.12

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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.