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Finding the Fourth Proportional to 17,862.60, 24,662.70 and 11,906.40

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Solution

The fourth proportional to 17,862.60, 24,662.70 and 11,906.40 is: 16,439.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,862.60 : 24,662.70 = 11,906.40 : x
  2. Step 2: Convert to fraction form
    17,862.60/24,662.70 = 11,906.40/x
  3. Step 3: Cross multiply
    17,862.60x = 24,662.70 × 11,906.40
  4. Step 4: Simplify right side
    17,862.60x = 293,643,971.28
  5. Step 5: Solve for x
    x = 293,643,971.28/17,862.60
  6. Step 6: Final answer
    x = 16,439.04

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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.