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Finding the Fourth Proportional to 14,454.68, 19,945.14 and 8,166.20

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Solution

The fourth proportional to 14,454.68, 19,945.14 and 8,166.20 is: 11,268.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,454.68 : 19,945.14 = 8,166.20 : x
  2. Step 2: Convert to fraction form
    14,454.68/19,945.14 = 8,166.20/x
  3. Step 3: Cross multiply
    14,454.68x = 19,945.14 × 8,166.20
  4. Step 4: Simplify right side
    14,454.68x = 162,876,002.27
  5. Step 5: Solve for x
    x = 162,876,002.27/14,454.68
  6. Step 6: Final answer
    x = 11,268.05

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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.