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Finding the Fourth Proportional to 14,634.19, 20,195.18 and 7,919.82

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Solution

The fourth proportional to 14,634.19, 20,195.18 and 7,919.82 is: 10,929.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,634.19 : 20,195.18 = 7,919.82 : x
  2. Step 2: Convert to fraction form
    14,634.19/20,195.18 = 7,919.82/x
  3. Step 3: Cross multiply
    14,634.19x = 20,195.18 × 7,919.82
  4. Step 4: Simplify right side
    14,634.19x = 159,942,159.78
  5. Step 5: Solve for x
    x = 159,942,159.78/14,634.19
  6. Step 6: Final answer
    x = 10,929.35

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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.