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Finding the Fourth Proportional to 203,712.88, 281,118.52 and 113,066.19

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Solution

The fourth proportional to 203,712.88, 281,118.52 and 113,066.19 is: 156,028.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,712.88 : 281,118.52 = 113,066.19 : x
  2. Step 2: Convert to fraction form
    203,712.88/281,118.52 = 113,066.19/x
  3. Step 3: Cross multiply
    203,712.88x = 281,118.52 × 113,066.19
  4. Step 4: Simplify right side
    203,712.88x = 31,784,999,994.84
  5. Step 5: Solve for x
    x = 31,784,999,994.84/203,712.88
  6. Step 6: Final answer
    x = 156,028.43

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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.