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Finding the Fourth Proportional to 8,921.44, 12,321.93 and 5,932.10

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Solution

The fourth proportional to 8,921.44, 12,321.93 and 5,932.10 is: 8,193.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.44 : 12,321.93 = 5,932.10 : x
  2. Step 2: Convert to fraction form
    8,921.44/12,321.93 = 5,932.10/x
  3. Step 3: Cross multiply
    8,921.44x = 12,321.93 × 5,932.10
  4. Step 4: Simplify right side
    8,921.44x = 73,094,920.95
  5. Step 5: Solve for x
    x = 73,094,920.95/8,921.44
  6. Step 6: Final answer
    x = 8,193.18

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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.