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Finding the Fourth Proportional to 14,661.80, 21,992.70 and 9,704.60

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Solution

The fourth proportional to 14,661.80, 21,992.70 and 9,704.60 is: 14,556.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,661.80 : 21,992.70 = 9,704.60 : x
  2. Step 2: Convert to fraction form
    14,661.80/21,992.70 = 9,704.60/x
  3. Step 3: Cross multiply
    14,661.80x = 21,992.70 × 9,704.60
  4. Step 4: Simplify right side
    14,661.80x = 213,430,356.42
  5. Step 5: Solve for x
    x = 213,430,356.42/14,661.80
  6. Step 6: Final answer
    x = 14,556.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.