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Finding the Fourth Proportional to 123,956.58, 170,863.78 and 113,659.46

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Solution

The fourth proportional to 123,956.58, 170,863.78 and 113,659.46 is: 156,670.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,956.58 : 170,863.78 = 113,659.46 : x
  2. Step 2: Convert to fraction form
    123,956.58/170,863.78 = 113,659.46/x
  3. Step 3: Cross multiply
    123,956.58x = 170,863.78 × 113,659.46
  4. Step 4: Simplify right side
    123,956.58x = 19,420,284,968.36
  5. Step 5: Solve for x
    x = 19,420,284,968.36/123,956.58
  6. Step 6: Final answer
    x = 156,670.06

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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.