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Finding the Fourth Proportional to 12,876.21, 19,317.21 and 6,952.97

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Solution

The fourth proportional to 12,876.21, 19,317.21 and 6,952.97 is: 10,431.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,876.21 : 19,317.21 = 6,952.97 : x
  2. Step 2: Convert to fraction form
    12,876.21/19,317.21 = 6,952.97/x
  3. Step 3: Cross multiply
    12,876.21x = 19,317.21 × 6,952.97
  4. Step 4: Simplify right side
    12,876.21x = 134,311,885.03
  5. Step 5: Solve for x
    x = 134,311,885.03/12,876.21
  6. Step 6: Final answer
    x = 10,431.01

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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.