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Finding the Fourth Proportional to 156,434.96, 215,884.50 and 88,462.11

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Solution

The fourth proportional to 156,434.96, 215,884.50 and 88,462.11 is: 122,080.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,434.96 : 215,884.50 = 88,462.11 : x
  2. Step 2: Convert to fraction form
    156,434.96/215,884.50 = 88,462.11/x
  3. Step 3: Cross multiply
    156,434.96x = 215,884.50 × 88,462.11
  4. Step 4: Simplify right side
    156,434.96x = 19,097,597,898.58
  5. Step 5: Solve for x
    x = 19,097,597,898.58/156,434.96
  6. Step 6: Final answer
    x = 122,080.11

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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.