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Finding the Fourth Proportional to 156,879.45, 216,498.42 and 96,485.58

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Solution

The fourth proportional to 156,879.45, 216,498.42 and 96,485.58 is: 133,153.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,879.45 : 216,498.42 = 96,485.58 : x
  2. Step 2: Convert to fraction form
    156,879.45/216,498.42 = 96,485.58/x
  3. Step 3: Cross multiply
    156,879.45x = 216,498.42 × 96,485.58
  4. Step 4: Simplify right side
    156,879.45x = 20,888,975,622.78
  5. Step 5: Solve for x
    x = 20,888,975,622.78/156,879.45
  6. Step 6: Final answer
    x = 133,153.04

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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.