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Finding the Fourth Proportional to 17,872.49, 26,809.68 and 4,724.51

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Solution

The fourth proportional to 17,872.49, 26,809.68 and 4,724.51 is: 7,087.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,872.49 : 26,809.68 = 4,724.51 : x
  2. Step 2: Convert to fraction form
    17,872.49/26,809.68 = 4,724.51/x
  3. Step 3: Cross multiply
    17,872.49x = 26,809.68 × 4,724.51
  4. Step 4: Simplify right side
    17,872.49x = 126,662,467.21
  5. Step 5: Solve for x
    x = 126,662,467.21/17,872.49
  6. Step 6: Final answer
    x = 7,087.01

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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.