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Finding the Fourth Proportional to 12,443.41, 17,171.90 and 6,854.41

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Solution

The fourth proportional to 12,443.41, 17,171.90 and 6,854.41 is: 9,459.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,443.41 : 17,171.90 = 6,854.41 : x
  2. Step 2: Convert to fraction form
    12,443.41/17,171.90 = 6,854.41/x
  3. Step 3: Cross multiply
    12,443.41x = 17,171.90 × 6,854.41
  4. Step 4: Simplify right side
    12,443.41x = 117,703,243.08
  5. Step 5: Solve for x
    x = 117,703,243.08/12,443.41
  6. Step 6: Final answer
    x = 9,459.08

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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.