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Finding the Fourth Proportional to 16,943.20, 25,443.60 and 16,424.80

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Solution

The fourth proportional to 16,943.20, 25,443.60 and 16,424.80 is: 24,665.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,943.20 : 25,443.60 = 16,424.80 : x
  2. Step 2: Convert to fraction form
    16,943.20/25,443.60 = 16,424.80/x
  3. Step 3: Cross multiply
    16,943.20x = 25,443.60 × 16,424.80
  4. Step 4: Simplify right side
    16,943.20x = 417,906,041.28
  5. Step 5: Solve for x
    x = 417,906,041.28/16,943.20
  6. Step 6: Final answer
    x = 24,665.12

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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.