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Finding the Fourth Proportional to 203,611.31, 281,017.35 and 112,996.39

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Solution

The fourth proportional to 203,611.31, 281,017.35 and 112,996.39 is: 155,953.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,611.31 : 281,017.35 = 112,996.39 : x
  2. Step 2: Convert to fraction form
    203,611.31/281,017.35 = 112,996.39/x
  3. Step 3: Cross multiply
    203,611.31x = 281,017.35 × 112,996.39
  4. Step 4: Simplify right side
    203,611.31x = 31,753,946,077.37
  5. Step 5: Solve for x
    x = 31,753,946,077.37/203,611.31
  6. Step 6: Final answer
    x = 155,953.74

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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.