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Finding the Fourth Proportional to 17,208.16, 25,821.64 and 6,678.60

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Solution

The fourth proportional to 17,208.16, 25,821.64 and 6,678.60 is: 10,021.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,208.16 : 25,821.64 = 6,678.60 : x
  2. Step 2: Convert to fraction form
    17,208.16/25,821.64 = 6,678.60/x
  3. Step 3: Cross multiply
    17,208.16x = 25,821.64 × 6,678.60
  4. Step 4: Simplify right side
    17,208.16x = 172,452,275.80
  5. Step 5: Solve for x
    x = 172,452,275.80/17,208.16
  6. Step 6: Final answer
    x = 10,021.54

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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.