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Finding the Fourth Proportional to 17,197.61, 25,791.00 and 6,666.90

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Solution

The fourth proportional to 17,197.61, 25,791.00 and 6,666.90 is: 9,998.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,197.61 : 25,791.00 = 6,666.90 : x
  2. Step 2: Convert to fraction form
    17,197.61/25,791.00 = 6,666.90/x
  3. Step 3: Cross multiply
    17,197.61x = 25,791.00 × 6,666.90
  4. Step 4: Simplify right side
    17,197.61x = 171,945,992.90
  5. Step 5: Solve for x
    x = 171,945,992.90/17,197.61
  6. Step 6: Final answer
    x = 9,998.25

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1.5x scale

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.