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Finding the Fourth Proportional to 18,773.50, 28,160.25 and 7,083.99

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Solution

The fourth proportional to 18,773.50, 28,160.25 and 7,083.99 is: 10,625.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.50 : 28,160.25 = 7,083.99 : x
  2. Step 2: Convert to fraction form
    18,773.50/28,160.25 = 7,083.99/x
  3. Step 3: Cross multiply
    18,773.50x = 28,160.25 × 7,083.99
  4. Step 4: Simplify right side
    18,773.50x = 199,486,929.40
  5. Step 5: Solve for x
    x = 199,486,929.40/18,773.50
  6. Step 6: Final answer
    x = 10,625.99

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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.