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Finding the Fourth Proportional to 15,694.52, 21,672.50 and 11,708.71

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Solution

The fourth proportional to 15,694.52, 21,672.50 and 11,708.71 is: 16,168.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,694.52 : 21,672.50 = 11,708.71 : x
  2. Step 2: Convert to fraction form
    15,694.52/21,672.50 = 11,708.71/x
  3. Step 3: Cross multiply
    15,694.52x = 21,672.50 × 11,708.71
  4. Step 4: Simplify right side
    15,694.52x = 253,756,904.75
  5. Step 5: Solve for x
    x = 253,756,904.75/15,694.52
  6. Step 6: Final answer
    x = 16,168.51

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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.