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Finding the Fourth Proportional to 14,634.51, 20,195.46 and 7,919.99

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Solution

The fourth proportional to 14,634.51, 20,195.46 and 7,919.99 is: 10,929.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,634.51 : 20,195.46 = 7,919.99 : x
  2. Step 2: Convert to fraction form
    14,634.51/20,195.46 = 7,919.99/x
  3. Step 3: Cross multiply
    14,634.51x = 20,195.46 × 7,919.99
  4. Step 4: Simplify right side
    14,634.51x = 159,947,740.27
  5. Step 5: Solve for x
    x = 159,947,740.27/14,634.51
  6. Step 6: Final answer
    x = 10,929.49

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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.