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Finding the Fourth Proportional to 13,008.62, 17,949.98 and 7,629.02

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Solution

The fourth proportional to 13,008.62, 17,949.98 and 7,629.02 is: 10,526.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,008.62 : 17,949.98 = 7,629.02 : x
  2. Step 2: Convert to fraction form
    13,008.62/17,949.98 = 7,629.02/x
  3. Step 3: Cross multiply
    13,008.62x = 17,949.98 × 7,629.02
  4. Step 4: Simplify right side
    13,008.62x = 136,940,763.15
  5. Step 5: Solve for x
    x = 136,940,763.15/13,008.62
  6. Step 6: Final answer
    x = 10,526.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.