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Finding the Fourth Proportional to 26,424.43, 39,640.74 and 8,892.89

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Solution

The fourth proportional to 26,424.43, 39,640.74 and 8,892.89 is: 13,340.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,424.43 : 39,640.74 = 8,892.89 : x
  2. Step 2: Convert to fraction form
    26,424.43/39,640.74 = 8,892.89/x
  3. Step 3: Cross multiply
    26,424.43x = 39,640.74 × 8,892.89
  4. Step 4: Simplify right side
    26,424.43x = 352,520,740.34
  5. Step 5: Solve for x
    x = 352,520,740.34/26,424.43
  6. Step 6: Final answer
    x = 13,340.71

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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.