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Finding the Fourth Proportional to 16,388.16, 22,616.40 and 8,936.16

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Solution

The fourth proportional to 16,388.16, 22,616.40 and 8,936.16 is: 12,332.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,388.16 : 22,616.40 = 8,936.16 : x
  2. Step 2: Convert to fraction form
    16,388.16/22,616.40 = 8,936.16/x
  3. Step 3: Cross multiply
    16,388.16x = 22,616.40 × 8,936.16
  4. Step 4: Simplify right side
    16,388.16x = 202,103,769.02
  5. Step 5: Solve for x
    x = 202,103,769.02/16,388.16
  6. Step 6: Final answer
    x = 12,332.30

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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.