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Finding the Fourth Proportional to 14,616.12, 20,170.44 and 8,647.64

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Solution

The fourth proportional to 14,616.12, 20,170.44 and 8,647.64 is: 11,933.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,616.12 : 20,170.44 = 8,647.64 : x
  2. Step 2: Convert to fraction form
    14,616.12/20,170.44 = 8,647.64/x
  3. Step 3: Cross multiply
    14,616.12x = 20,170.44 × 8,647.64
  4. Step 4: Simplify right side
    14,616.12x = 174,426,703.76
  5. Step 5: Solve for x
    x = 174,426,703.76/14,616.12
  6. Step 6: Final answer
    x = 11,933.86

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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.