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Finding the Fourth Proportional to 21,672.52, 29,908.18 and 11,736.52

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Solution

The fourth proportional to 21,672.52, 29,908.18 and 11,736.52 is: 16,196.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,672.52 : 29,908.18 = 11,736.52 : x
  2. Step 2: Convert to fraction form
    21,672.52/29,908.18 = 11,736.52/x
  3. Step 3: Cross multiply
    21,672.52x = 29,908.18 × 11,736.52
  4. Step 4: Simplify right side
    21,672.52x = 351,017,952.73
  5. Step 5: Solve for x
    x = 351,017,952.73/21,672.52
  6. Step 6: Final answer
    x = 16,196.45

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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.