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Finding the Fourth Proportional to 156,446.76, 215,894.52 and 84,826.56

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Solution

The fourth proportional to 156,446.76, 215,894.52 and 84,826.56 is: 117,059.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,446.76 : 215,894.52 = 84,826.56 : x
  2. Step 2: Convert to fraction form
    156,446.76/215,894.52 = 84,826.56/x
  3. Step 3: Cross multiply
    156,446.76x = 215,894.52 × 84,826.56
  4. Step 4: Simplify right side
    156,446.76x = 18,313,589,454.45
  5. Step 5: Solve for x
    x = 18,313,589,454.45/156,446.76
  6. Step 6: Final answer
    x = 117,059.56

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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.