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Finding the Fourth Proportional to 18,084.60, 24,940.10 and 12,409.34

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Solution

The fourth proportional to 18,084.60, 24,940.10 and 12,409.34 is: 17,113.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,084.60 : 24,940.10 = 12,409.34 : x
  2. Step 2: Convert to fraction form
    18,084.60/24,940.10 = 12,409.34/x
  3. Step 3: Cross multiply
    18,084.60x = 24,940.10 × 12,409.34
  4. Step 4: Simplify right side
    18,084.60x = 309,489,993.79
  5. Step 5: Solve for x
    x = 309,489,993.79/18,084.60
  6. Step 6: Final answer
    x = 17,113.46

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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.