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Finding the Fourth Proportional to 12,398.01, 17,104.97 and 7,924.38

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Solution

The fourth proportional to 12,398.01, 17,104.97 and 7,924.38 is: 10,932.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.01 : 17,104.97 = 7,924.38 : x
  2. Step 2: Convert to fraction form
    12,398.01/17,104.97 = 7,924.38/x
  3. Step 3: Cross multiply
    12,398.01x = 17,104.97 × 7,924.38
  4. Step 4: Simplify right side
    12,398.01x = 135,546,242.55
  5. Step 5: Solve for x
    x = 135,546,242.55/12,398.01
  6. Step 6: Final answer
    x = 10,932.90

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1.5x scale

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.