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Finding the Fourth Proportional to 26,617.43, 39,929.72 and 7,897.73

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Solution

The fourth proportional to 26,617.43, 39,929.72 and 7,897.73 is: 11,847.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,617.43 : 39,929.72 = 7,897.73 : x
  2. Step 2: Convert to fraction form
    26,617.43/39,929.72 = 7,897.73/x
  3. Step 3: Cross multiply
    26,617.43x = 39,929.72 × 7,897.73
  4. Step 4: Simplify right side
    26,617.43x = 315,353,908.40
  5. Step 5: Solve for x
    x = 315,353,908.40/26,617.43
  6. Step 6: Final answer
    x = 11,847.65

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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.