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Finding the Fourth Proportional to 17,076.65, 25,618.06 and 7,721.07

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Solution

The fourth proportional to 17,076.65, 25,618.06 and 7,721.07 is: 11,583.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,076.65 : 25,618.06 = 7,721.07 : x
  2. Step 2: Convert to fraction form
    17,076.65/25,618.06 = 7,721.07/x
  3. Step 3: Cross multiply
    17,076.65x = 25,618.06 × 7,721.07
  4. Step 4: Simplify right side
    17,076.65x = 197,798,911.29
  5. Step 5: Solve for x
    x = 197,798,911.29/17,076.65
  6. Step 6: Final answer
    x = 11,583.00

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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.