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Finding the Fourth Proportional to 17,916.28, 26,862.90 and 8,551.24

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Solution

The fourth proportional to 17,916.28, 26,862.90 and 8,551.24 is: 12,821.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,916.28 : 26,862.90 = 8,551.24 : x
  2. Step 2: Convert to fraction form
    17,916.28/26,862.90 = 8,551.24/x
  3. Step 3: Cross multiply
    17,916.28x = 26,862.90 × 8,551.24
  4. Step 4: Simplify right side
    17,916.28x = 229,711,105.00
  5. Step 5: Solve for x
    x = 229,711,105.00/17,916.28
  6. Step 6: Final answer
    x = 12,821.36

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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.