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Finding the Fourth Proportional to 18,644.64, 25,734.66 and 10,994.60

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Solution

The fourth proportional to 18,644.64, 25,734.66 and 10,994.60 is: 15,175.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,644.64 : 25,734.66 = 10,994.60 : x
  2. Step 2: Convert to fraction form
    18,644.64/25,734.66 = 10,994.60/x
  3. Step 3: Cross multiply
    18,644.64x = 25,734.66 × 10,994.60
  4. Step 4: Simplify right side
    18,644.64x = 282,942,292.84
  5. Step 5: Solve for x
    x = 282,942,292.84/18,644.64
  6. Step 6: Final answer
    x = 15,175.53

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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.