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Finding the Fourth Proportional to 156,647.77, 216,174.09 and 85,027.78

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Solution

The fourth proportional to 156,647.77, 216,174.09 and 85,027.78 is: 117,338.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,647.77 : 216,174.09 = 85,027.78 : x
  2. Step 2: Convert to fraction form
    156,647.77/216,174.09 = 85,027.78/x
  3. Step 3: Cross multiply
    156,647.77x = 216,174.09 × 85,027.78
  4. Step 4: Simplify right side
    156,647.77x = 18,380,802,966.22
  5. Step 5: Solve for x
    x = 18,380,802,966.22/156,647.77
  6. Step 6: Final answer
    x = 117,338.43

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1.5x scale

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.