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Finding the Fourth Proportional to 18,611.17, 25,674.87 and 11,053.26

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Solution

The fourth proportional to 18,611.17, 25,674.87 and 11,053.26 is: 15,248.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.17 : 25,674.87 = 11,053.26 : x
  2. Step 2: Convert to fraction form
    18,611.17/25,674.87 = 11,053.26/x
  3. Step 3: Cross multiply
    18,611.17x = 25,674.87 × 11,053.26
  4. Step 4: Simplify right side
    18,611.17x = 283,791,055.03
  5. Step 5: Solve for x
    x = 283,791,055.03/18,611.17
  6. Step 6: Final answer
    x = 15,248.43

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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.