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Finding the Fourth Proportional to 18,777.65, 25,913.16 and 11,704.10

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Solution

The fourth proportional to 18,777.65, 25,913.16 and 11,704.10 is: 16,151.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,777.65 : 25,913.16 = 11,704.10 : x
  2. Step 2: Convert to fraction form
    18,777.65/25,913.16 = 11,704.10/x
  3. Step 3: Cross multiply
    18,777.65x = 25,913.16 × 11,704.10
  4. Step 4: Simplify right side
    18,777.65x = 303,290,086.39
  5. Step 5: Solve for x
    x = 303,290,086.39/18,777.65
  6. Step 6: Final answer
    x = 16,151.66

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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.