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Finding the Fourth Proportional to 17,316.82, 25,978.47 and 6,929.38

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Solution

The fourth proportional to 17,316.82, 25,978.47 and 6,929.38 is: 10,395.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,316.82 : 25,978.47 = 6,929.38 : x
  2. Step 2: Convert to fraction form
    17,316.82/25,978.47 = 6,929.38/x
  3. Step 3: Cross multiply
    17,316.82x = 25,978.47 × 6,929.38
  4. Step 4: Simplify right side
    17,316.82x = 180,014,690.45
  5. Step 5: Solve for x
    x = 180,014,690.45/17,316.82
  6. Step 6: Final answer
    x = 10,395.37

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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.