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Finding the Fourth Proportional to 16,691.88, 25,039.88 and 7,924.72

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Solution

The fourth proportional to 16,691.88, 25,039.88 and 7,924.72 is: 11,888.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,691.88 : 25,039.88 = 7,924.72 : x
  2. Step 2: Convert to fraction form
    16,691.88/25,039.88 = 7,924.72/x
  3. Step 3: Cross multiply
    16,691.88x = 25,039.88 × 7,924.72
  4. Step 4: Simplify right side
    16,691.88x = 198,434,037.83
  5. Step 5: Solve for x
    x = 198,434,037.83/16,691.88
  6. Step 6: Final answer
    x = 11,888.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.