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Finding the Fourth Proportional to 18,626.75, 27,929.59 and 17,038.01

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Solution

The fourth proportional to 18,626.75, 27,929.59 and 17,038.01 is: 25,547.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.75 : 27,929.59 = 17,038.01 : x
  2. Step 2: Convert to fraction form
    18,626.75/27,929.59 = 17,038.01/x
  3. Step 3: Cross multiply
    18,626.75x = 27,929.59 × 17,038.01
  4. Step 4: Simplify right side
    18,626.75x = 475,864,660.94
  5. Step 5: Solve for x
    x = 475,864,660.94/18,626.75
  6. Step 6: Final answer
    x = 25,547.39

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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.