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Finding the Fourth Proportional to 14,620.88, 20,177.18 and 8,333.12

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Solution

The fourth proportional to 14,620.88, 20,177.18 and 8,333.12 is: 11,499.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,620.88 : 20,177.18 = 8,333.12 : x
  2. Step 2: Convert to fraction form
    14,620.88/20,177.18 = 8,333.12/x
  3. Step 3: Cross multiply
    14,620.88x = 20,177.18 × 8,333.12
  4. Step 4: Simplify right side
    14,620.88x = 168,138,862.20
  5. Step 5: Solve for x
    x = 168,138,862.20/14,620.88
  6. Step 6: Final answer
    x = 11,499.91

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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.