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Finding the Fourth Proportional to 156,451.59, 215,891.39 and 88,474.92

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Solution

The fourth proportional to 156,451.59, 215,891.39 and 88,474.92 is: 122,088.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,451.59 : 215,891.39 = 88,474.92 : x
  2. Step 2: Convert to fraction form
    156,451.59/215,891.39 = 88,474.92/x
  3. Step 3: Cross multiply
    156,451.59x = 215,891.39 × 88,474.92
  4. Step 4: Simplify right side
    156,451.59x = 19,100,973,458.94
  5. Step 5: Solve for x
    x = 19,100,973,458.94/156,451.59
  6. Step 6: Final answer
    x = 122,088.71

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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.