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Finding the Fourth Proportional to 17,916.44, 26,812.11 and 15,135.18

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Solution

The fourth proportional to 17,916.44, 26,812.11 and 15,135.18 is: 22,649.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,916.44 : 26,812.11 = 15,135.18 : x
  2. Step 2: Convert to fraction form
    17,916.44/26,812.11 = 15,135.18/x
  3. Step 3: Cross multiply
    17,916.44x = 26,812.11 × 15,135.18
  4. Step 4: Simplify right side
    17,916.44x = 405,806,111.03
  5. Step 5: Solve for x
    x = 405,806,111.03/17,916.44
  6. Step 6: Final answer
    x = 22,649.94

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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.