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Finding the Fourth Proportional to 112,694.77, 168,773.81 and 65,209.79

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Solution

The fourth proportional to 112,694.77, 168,773.81 and 65,209.79 is: 97,659.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,694.77 : 168,773.81 = 65,209.79 : x
  2. Step 2: Convert to fraction form
    112,694.77/168,773.81 = 65,209.79/x
  3. Step 3: Cross multiply
    112,694.77x = 168,773.81 × 65,209.79
  4. Step 4: Simplify right side
    112,694.77x = 11,005,704,707.60
  5. Step 5: Solve for x
    x = 11,005,704,707.60/112,694.77
  6. Step 6: Final answer
    x = 97,659.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.