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Finding the Fourth Proportional to 16,617.20, 24,925.80 and 12,243.20

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Solution

The fourth proportional to 16,617.20, 24,925.80 and 12,243.20 is: 18,364.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,617.20 : 24,925.80 = 12,243.20 : x
  2. Step 2: Convert to fraction form
    16,617.20/24,925.80 = 12,243.20/x
  3. Step 3: Cross multiply
    16,617.20x = 24,925.80 × 12,243.20
  4. Step 4: Simplify right side
    16,617.20x = 305,171,554.56
  5. Step 5: Solve for x
    x = 305,171,554.56/16,617.20
  6. Step 6: Final answer
    x = 18,364.80

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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.