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Finding the Fourth Proportional to 156,472.66, 215,932.38 and 84,852.66

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Solution

The fourth proportional to 156,472.66, 215,932.38 and 84,852.66 is: 117,096.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,472.66 : 215,932.38 = 84,852.66 : x
  2. Step 2: Convert to fraction form
    156,472.66/215,932.38 = 84,852.66/x
  3. Step 3: Cross multiply
    156,472.66x = 215,932.38 × 84,852.66
  4. Step 4: Simplify right side
    156,472.66x = 18,322,436,823.13
  5. Step 5: Solve for x
    x = 18,322,436,823.13/156,472.66
  6. Step 6: Final answer
    x = 117,096.73

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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.