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Finding the Fourth Proportional to 28,838.25, 39,797.19 and 17,660.25

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Solution

The fourth proportional to 28,838.25, 39,797.19 and 17,660.25 is: 24,371.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,838.25 : 39,797.19 = 17,660.25 : x
  2. Step 2: Convert to fraction form
    28,838.25/39,797.19 = 17,660.25/x
  3. Step 3: Cross multiply
    28,838.25x = 39,797.19 × 17,660.25
  4. Step 4: Simplify right side
    28,838.25x = 702,828,324.70
  5. Step 5: Solve for x
    x = 702,828,324.70/28,838.25
  6. Step 6: Final answer
    x = 24,371.39

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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.