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Finding the Fourth Proportional to 13,959.99, 20,943.63 and 4,601.43

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Solution

The fourth proportional to 13,959.99, 20,943.63 and 4,601.43 is: 6,903.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959.99 : 20,943.63 = 4,601.43 : x
  2. Step 2: Convert to fraction form
    13,959.99/20,943.63 = 4,601.43/x
  3. Step 3: Cross multiply
    13,959.99x = 20,943.63 × 4,601.43
  4. Step 4: Simplify right side
    13,959.99x = 96,370,647.39
  5. Step 5: Solve for x
    x = 96,370,647.39/13,959.99
  6. Step 6: Final answer
    x = 6,903.35

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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.