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Finding the Fourth Proportional to 26,616.64, 39,918.14 and 7,892.30

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Solution

The fourth proportional to 26,616.64, 39,918.14 and 7,892.30 is: 11,836.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,616.64 : 39,918.14 = 7,892.30 : x
  2. Step 2: Convert to fraction form
    26,616.64/39,918.14 = 7,892.30/x
  3. Step 3: Cross multiply
    26,616.64x = 39,918.14 × 7,892.30
  4. Step 4: Simplify right side
    26,616.64x = 315,045,936.32
  5. Step 5: Solve for x
    x = 315,045,936.32/26,616.64
  6. Step 6: Final answer
    x = 11,836.43

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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.