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Finding the Fourth Proportional to 14,879.22, 20,533.91 and 8,165.13

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Solution

The fourth proportional to 14,879.22, 20,533.91 and 8,165.13 is: 11,268.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,879.22 : 20,533.91 = 8,165.13 : x
  2. Step 2: Convert to fraction form
    14,879.22/20,533.91 = 8,165.13/x
  3. Step 3: Cross multiply
    14,879.22x = 20,533.91 × 8,165.13
  4. Step 4: Simplify right side
    14,879.22x = 167,662,003.73
  5. Step 5: Solve for x
    x = 167,662,003.73/14,879.22
  6. Step 6: Final answer
    x = 11,268.20

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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.