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Finding the Fourth Proportional to 26,649.84, 39,978.66 and 8,874.48

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Solution

The fourth proportional to 26,649.84, 39,978.66 and 8,874.48 is: 13,313.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,649.84 : 39,978.66 = 8,874.48 : x
  2. Step 2: Convert to fraction form
    26,649.84/39,978.66 = 8,874.48/x
  3. Step 3: Cross multiply
    26,649.84x = 39,978.66 × 8,874.48
  4. Step 4: Simplify right side
    26,649.84x = 354,789,818.60
  5. Step 5: Solve for x
    x = 354,789,818.60/26,649.84
  6. Step 6: Final answer
    x = 13,313.02

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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.