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Finding the Fourth Proportional to 17,908.10, 26,851.29 and 6,815.54

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Solution

The fourth proportional to 17,908.10, 26,851.29 and 6,815.54 is: 10,219.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,908.10 : 26,851.29 = 6,815.54 : x
  2. Step 2: Convert to fraction form
    17,908.10/26,851.29 = 6,815.54/x
  3. Step 3: Cross multiply
    17,908.10x = 26,851.29 × 6,815.54
  4. Step 4: Simplify right side
    17,908.10x = 183,006,041.05
  5. Step 5: Solve for x
    x = 183,006,041.05/17,908.10
  6. Step 6: Final answer
    x = 10,219.18

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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.