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Finding the Fourth Proportional to 13,959.71, 20,942.13 and 4,600.28

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Solution

The fourth proportional to 13,959.71, 20,942.13 and 4,600.28 is: 6,901.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959.71 : 20,942.13 = 4,600.28 : x
  2. Step 2: Convert to fraction form
    13,959.71/20,942.13 = 4,600.28/x
  3. Step 3: Cross multiply
    13,959.71x = 20,942.13 × 4,600.28
  4. Step 4: Simplify right side
    13,959.71x = 96,339,661.80
  5. Step 5: Solve for x
    x = 96,339,661.80/13,959.71
  6. Step 6: Final answer
    x = 6,901.27

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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.