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Finding the Fourth Proportional to 18,616.84, 25,690.74 and 10,232.20

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Solution

The fourth proportional to 18,616.84, 25,690.74 and 10,232.20 is: 14,120.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,616.84 : 25,690.74 = 10,232.20 : x
  2. Step 2: Convert to fraction form
    18,616.84/25,690.74 = 10,232.20/x
  3. Step 3: Cross multiply
    18,616.84x = 25,690.74 × 10,232.20
  4. Step 4: Simplify right side
    18,616.84x = 262,872,789.83
  5. Step 5: Solve for x
    x = 262,872,789.83/18,616.84
  6. Step 6: Final answer
    x = 14,120.16

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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.