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Finding the Fourth Proportional to 14,879.48, 20,534.14 and 8,165.54

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Solution

The fourth proportional to 14,879.48, 20,534.14 and 8,165.54 is: 11,268.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,879.48 : 20,534.14 = 8,165.54 : x
  2. Step 2: Convert to fraction form
    14,879.48/20,534.14 = 8,165.54/x
  3. Step 3: Cross multiply
    14,879.48x = 20,534.14 × 8,165.54
  4. Step 4: Simplify right side
    14,879.48x = 167,672,372.46
  5. Step 5: Solve for x
    x = 167,672,372.46/14,879.48
  6. Step 6: Final answer
    x = 11,268.70

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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.