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Finding the Fourth Proportional to 12,805.83, 17,644.64 and 8,606.79

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Solution

The fourth proportional to 12,805.83, 17,644.64 and 8,606.79 is: 11,858.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,805.83 : 17,644.64 = 8,606.79 : x
  2. Step 2: Convert to fraction form
    12,805.83/17,644.64 = 8,606.79/x
  3. Step 3: Cross multiply
    12,805.83x = 17,644.64 × 8,606.79
  4. Step 4: Simplify right side
    12,805.83x = 151,863,668.07
  5. Step 5: Solve for x
    x = 151,863,668.07/12,805.83
  6. Step 6: Final answer
    x = 11,858.95

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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.