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Finding the Fourth Proportional to 15,796.75, 21,799.56 and 8,723.11

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Solution

The fourth proportional to 15,796.75, 21,799.56 and 8,723.11 is: 12,037.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,796.75 : 21,799.56 = 8,723.11 : x
  2. Step 2: Convert to fraction form
    15,796.75/21,799.56 = 8,723.11/x
  3. Step 3: Cross multiply
    15,796.75x = 21,799.56 × 8,723.11
  4. Step 4: Simplify right side
    15,796.75x = 190,159,959.83
  5. Step 5: Solve for x
    x = 190,159,959.83/15,796.75
  6. Step 6: Final answer
    x = 12,037.92

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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.