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Finding the Fourth Proportional to 84,686.67, 127,057.77 and 34,790.27

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Solution

The fourth proportional to 84,686.67, 127,057.77 and 34,790.27 is: 52,196.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,686.67 : 127,057.77 = 34,790.27 : x
  2. Step 2: Convert to fraction form
    84,686.67/127,057.77 = 34,790.27/x
  3. Step 3: Cross multiply
    84,686.67x = 127,057.77 × 34,790.27
  4. Step 4: Simplify right side
    84,686.67x = 4,420,373,488.61
  5. Step 5: Solve for x
    x = 4,420,373,488.61/84,686.67
  6. Step 6: Final answer
    x = 52,196.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.