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Finding the Fourth Proportional to 283,930.51, 425,977.85 and 91,800.85

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Solution

The fourth proportional to 283,930.51, 425,977.85 and 91,800.85 is: 137,727.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,930.51 : 425,977.85 = 91,800.85 : x
  2. Step 2: Convert to fraction form
    283,930.51/425,977.85 = 91,800.85/x
  3. Step 3: Cross multiply
    283,930.51x = 425,977.85 × 91,800.85
  4. Step 4: Simplify right side
    283,930.51x = 39,105,128,711.17
  5. Step 5: Solve for x
    x = 39,105,128,711.17/283,930.51
  6. Step 6: Final answer
    x = 137,727.81

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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.