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Finding the Fourth Proportional to 283,805.96, 425,585.56 and 81,357.48

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Solution

The fourth proportional to 283,805.96, 425,585.56 and 81,357.48 is: 122,000.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,805.96 : 425,585.56 = 81,357.48 : x
  2. Step 2: Convert to fraction form
    283,805.96/425,585.56 = 81,357.48/x
  3. Step 3: Cross multiply
    283,805.96x = 425,585.56 × 81,357.48
  4. Step 4: Simplify right side
    283,805.96x = 34,624,568,685.99
  5. Step 5: Solve for x
    x = 34,624,568,685.99/283,805.96
  6. Step 6: Final answer
    x = 122,000.85

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1.5x scale

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.