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Finding the Fourth Proportional to 28,407.53, 39,239.49 and 23,049.99

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Solution

The fourth proportional to 28,407.53, 39,239.49 and 23,049.99 is: 31,839.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,407.53 : 39,239.49 = 23,049.99 : x
  2. Step 2: Convert to fraction form
    28,407.53/39,239.49 = 23,049.99/x
  3. Step 3: Cross multiply
    28,407.53x = 39,239.49 × 23,049.99
  4. Step 4: Simplify right side
    28,407.53x = 904,469,852.11
  5. Step 5: Solve for x
    x = 904,469,852.11/28,407.53
  6. Step 6: Final answer
    x = 31,839.09

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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.