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Finding the Fourth Proportional to 9,940.52, 13,712.20 and 5,959.32

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Solution

The fourth proportional to 9,940.52, 13,712.20 and 5,959.32 is: 8,220.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,940.52 : 13,712.20 = 5,959.32 : x
  2. Step 2: Convert to fraction form
    9,940.52/13,712.20 = 5,959.32/x
  3. Step 3: Cross multiply
    9,940.52x = 13,712.20 × 5,959.32
  4. Step 4: Simplify right side
    9,940.52x = 81,715,289.35
  5. Step 5: Solve for x
    x = 81,715,289.35/9,940.52
  6. Step 6: Final answer
    x = 8,220.43

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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.