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Finding the Fourth Proportional to 12,347.74, 17,039.88 and 6,682.49

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Solution

The fourth proportional to 12,347.74, 17,039.88 and 6,682.49 is: 9,221.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347.74 : 17,039.88 = 6,682.49 : x
  2. Step 2: Convert to fraction form
    12,347.74/17,039.88 = 6,682.49/x
  3. Step 3: Cross multiply
    12,347.74x = 17,039.88 × 6,682.49
  4. Step 4: Simplify right side
    12,347.74x = 113,868,709.09
  5. Step 5: Solve for x
    x = 113,868,709.09/12,347.74
  6. Step 6: Final answer
    x = 9,221.83

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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.