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Finding the Fourth Proportional to 14,642.76, 20,201.76 and 8,351.49

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Solution

The fourth proportional to 14,642.76, 20,201.76 and 8,351.49 is: 11,522.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,642.76 : 20,201.76 = 8,351.49 : x
  2. Step 2: Convert to fraction form
    14,642.76/20,201.76 = 8,351.49/x
  3. Step 3: Cross multiply
    14,642.76x = 20,201.76 × 8,351.49
  4. Step 4: Simplify right side
    14,642.76x = 168,714,796.62
  5. Step 5: Solve for x
    x = 168,714,796.62/14,642.76
  6. Step 6: Final answer
    x = 11,522.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.