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Finding the Fourth Proportional to 14,616.66, 20,173.59 and 8,651.64

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Solution

The fourth proportional to 14,616.66, 20,173.59 and 8,651.64 is: 11,940.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,616.66 : 20,173.59 = 8,651.64 : x
  2. Step 2: Convert to fraction form
    14,616.66/20,173.59 = 8,651.64/x
  3. Step 3: Cross multiply
    14,616.66x = 20,173.59 × 8,651.64
  4. Step 4: Simplify right side
    14,616.66x = 174,534,638.19
  5. Step 5: Solve for x
    x = 174,534,638.19/14,616.66
  6. Step 6: Final answer
    x = 11,940.80

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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.