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Finding the Fourth Proportional to 26,612.40, 39,915.40 and 11,028.40

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Solution

The fourth proportional to 26,612.40, 39,915.40 and 11,028.40 is: 16,541.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,612.40 : 39,915.40 = 11,028.40 : x
  2. Step 2: Convert to fraction form
    26,612.40/39,915.40 = 11,028.40/x
  3. Step 3: Cross multiply
    26,612.40x = 39,915.40 × 11,028.40
  4. Step 4: Simplify right side
    26,612.40x = 440,202,997.36
  5. Step 5: Solve for x
    x = 440,202,997.36/26,612.40
  6. Step 6: Final answer
    x = 16,541.27

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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.